How to random the choices in php

I am creating a random generated quiz with 10 questions. In generating the random question is fine but i want to display also the choices in random same with the questions.

This is my code that I am currently working with.

> <?php     generate();         function generate()     {
>       include('connection.php');      mysql_select_db('exam');
>       $result=mysql_query("SELECT * FROM questionaires INNER JOIN choices
> ON questionaires.q_id=choices.q_id WHERE RAND()<(SELECT
> ((10/COUNT(*))*10) FROM questionaires) ORDER BY RAND() LIMIT 10");
>       $c=0;       echo "<table border='3' align='center'
> bordercolor='#CCCCCC'>            <tr>            <th>Number:</th>
>           <th>Question</th>           </tr>";
> 
>           while($row = mysql_fetch_array($result))            {
>               $c++;
>               echo "<tr>";
>               echo "<td>" . $c . "</td>";
>               echo "<td>";
>               echo $row['question'] . "<br>";
>               echo "<input type='radio' name='ans'>".$row['choice_a']."</input><br>";
>               echo "<input type='radio' name='ans'>".$row['choice_b']."</input><br>";
>               echo "<input type='radio' name='ans'>".$row['choice_c']."</input><br>";
>               echo "<input type='radio' name='ans'>".$row['choice_d']."</input><br>";
>               echo "</td>";
>               echo "</tr>";
>                   //}
>               //}             }           echo "</table>";    }    ?>

Little help will highly appreciated.