C# need to add random response with switch statement

namespace _7._39
{
    class Program
    {
        static void Main(string[] args)
       {
        string response1;
        string response2;
        string response3;
        string response4;

        Random resp = new Random();

        bool correct = Question();// Create a value to call the question method

        if (correct== true)// when the answer is true it return very good
        {
            Console.WriteLine("Very Good!");
        }
        else// when the answer is false it returns to try again
        {
            Console.WriteLine("No please try again");
        }
    }
    public static bool Question()
    {
        Random rand = new Random();// we create a random number
        int num = rand.Next(1, 9);// first random number between 1 and 9
        int num1 = rand.Next(1, 9);// second random number between 1 and 9

        int ans = num * num1;// the value of multiplication between 1 and 2

        // asking what the two values are multiplied
        Console.WriteLine("What is"+ num.ToString()+ "*" +num1.ToString());
        // reads the users attempt 
        int attempt = int.Parse(Console.ReadLine());


        if (attempt == ans)// when the attempt is equal to the answer
        {
            return true;// its returns true bool
        }

        else// if it is false it says no please try again
        {
            Console.WriteLine("No please try again");
            return Question();// and creates a new question for the user
        }
    }
}
}

I need my correct== true and false to respond with a random response among 4 possible choices. I need to do this by doing a switch statement to issue each response. Also by using random to select which response comes up.

Very good!

Excellent!

Nice work!

Keep up the good work!

and 4 options for a false response as well