Math game, answer box

So I'd like to get some help on this project i'm working on. Basically i'm doing a math game. There's three boxes where answer options are available. My problem is i don't know how to randomize where the correct answer is (it has to be in one position for it to work) Here is the code, and if anyone'd help me i'd be pleased.

Note: settings.pyis just a file where i've got variables defined such as WIDTH, HEIGHT etc.

import pygame, sys, random
from settings import *
class Game:
    def __init__(self):
        pygame.init()
        pygame.display.set_caption(TITLE)
        self.gameDisplay = pygame.display.set_mode((WIDTH, HEIGHT))
        self.font = pygame.font.SysFont(None, 35, True)
        self.plusorminus = random.choice(['+','-'])
        self.No1 = random.randrange(1, 101)
        self.No2 = random.randrange(1, 101)
        self.random1 = str(random.randrange(1,101))
        self.random2 = str(random.randrange(1, 101))
        self.AnswerInput = None
        self.score = 0
        pygame.display.update()
        self.clock = pygame.time.Clock()
        self.GameLoop()

    def displayText(self, text, color, coordinates):
        self.text = self.font.render(text, 1, color)
        self.gameDisplay.blit(self.text, coordinates)

    def CalculateAnswer(self):
        if self.plusorminus == '-':
            if self.No1 > self.No2:
                self.answer = self.No1 - self.No2
            else:
                self.answer = self.No2 - self.No1
        else:
            if self.No1 > self.No2:
                self.answer = self.No1 + self.No2
            else:
                self.answer = self.No2 + self.No1
        return str(self.answer)

    def CheckAnswer(self):
            if self.AnswerInput == 1:
                self.displayText("Correct answer", RED, [WIDTH / 2 - 100, HEIGHT / 2 + 200])
            elif self.AnswerInput == 0:
                pass
    def Update_Score(self):
        self.displayText("Score: {}".format(self.score), WHITE, [10,10])
    def CheckNewQuestion(self):
        if self.AnswerInput == 1:
            self.CheckAnswer()
            #Regenerate the numbers
            self.No1 = random.randrange(1, 101)
            self.No2 = random.randrange(1, 101)
            self.random1 = str(random.randrange(1, 101))
            self.random2 = str(random.randrange(1, 101))
            self.plusorminus = random.choice(['+', '-'])
            self.CalculateAnswer() #Recalculate everything
            self.DrawObjects() #Run function again
            self.AnswerInput = None

    def DrawObjects(self):
        self.gameDisplay.fill(BLACK) #Fill screen black
        #Draw text box
        pygame.draw.rect(self.gameDisplay, WHITE, [WIDTH / 2 - 150, HEIGHT / 2 - 65, 300, 50])
        #Write text
        if self.No1 > self.No2:
            self.displayText("What is {} {} {}?".format(self.No1, self.plusorminus, self.No2), RED, [WIDTH / 2 - 108, HEIGHT / 2 - 52])
        else:
            self.displayText("What is {} {} {}?".format(self.No2, self.plusorminus, self.No1), RED, [WIDTH / 2 - 108, HEIGHT / 2 - 52])
        #Draw the three answer boxes
        self.Answerbox1 = pygame.draw.rect(self.gameDisplay, WHITE,[WIDTH / 2 + 150, HEIGHT / 2 + 104, 150, 50])  # Randbox1
        self.Answerbox2 = pygame.draw.rect(self.gameDisplay, WHITE,[WIDTH / 2 - 75, HEIGHT / 2 + 104, 150, 50])  # Randbox3
        self.Answerbox3 = pygame.draw.rect(self.gameDisplay, WHITE,[WIDTH / 2 - 300, HEIGHT / 2 + 104, 150, 50])  # Ranbox3
        #Write the answer options
        self.displayText(str(self.answer), RED, [self.Answerbox1[0] + 60, self.Answerbox1[1] + 15])
        self.displayText(str(self.random2), RED, [self.Answerbox2[0] + 60, self.Answerbox2[1] + 15])
        self.displayText(str(self.random1), RED, [self.Answerbox3[0] + 60, self.Answerbox3[1] + 15])

    def GameLoop(self):
        print()
        print(self.CalculateAnswer())
        self.gameExit = False
        while not self.gameExit:
            for self.event in pygame.event.get():
                if self.event.type == pygame.QUIT:
                    self.gameExit = True
                elif self.event.type == pygame.MOUSEBUTTONDOWN:
                    pos = pygame.mouse.get_pos()
                    if self.Answerbox1.collidepoint(pos):
                        self.AnswerInput = 1
                        self.score += 10
                        self.CheckNewQuestion()
                    if self.Answerbox2.collidepoint(pos):
                        self.AnswerInput = 0
                    elif self.Answerbox3.collidepoint(pos):
                        self.AnswerInput = 0
                    else:
                        self.AnswerInput = 2
            self.DrawObjects()
            self.Update_Score()
            self.CheckAnswer()
            self.CheckNewQuestion()
            pygame.display.update()
            self.clock.tick(FPS)
        pygame.quit()
        sys.exit()
Game()