Hello, I want to make a simple multiple choice quiz game with the coding below, but I want to make the multiple choice answers as image and the answer key too, so the right answer will be corrected with the same image, what should I change on the script ? Maybe any other opinion to make the multiple choice answers are image and the answer key (right answer). I'm new to Unity3D, and I'm sorry for my bad English.

Code:

private int idLevel;
     public Text quest;
     public Text answerA;
     public Text answerB;
     public Text answerC;
     public Text answerD;
     public Text infoAnswer;
     public string[] dbQuest;
     public string[] dbAnswerA;
     public string[] dbAnswerB;
     public string[] dbAnswerC;
     public string[] dbAnswerD;
     public string[] trueAnswer;
     private int idQuest;
     private float answer;
     private float question;
     private float media;
     private int infoLevel;
     void Start () {
         idLevel = PlayerPrefs.GetInt ("idLevel");
         idQuest = 0 ;
         question = dbQuest.Length;
 
         quest.text = dbQuest [idQuest];
         answerA.text = dbAnswerA [idQuest];
         answerB.text = dbAnswerB [idQuest];
         answerC.text = dbAnswerC [idQuest];
         answerD.text = dbAnswerD [idQuest];
 
         infoAnswer.text = "question "+(idQuest + 1).ToString()+" from "+question.ToString()+"";
     }
     public void answ(string dbAnswer)
     {
         if(dbAnswer == "A"){
             if(dbAnswerA[idQuest] == trueAnswer[idQuest]){
                 answer += 1;
             }
         }
         else if(dbAnswer == "B"){
             if(dbAnswerB[idQuest] == trueAnswer[idQuest]){
                 answer += 1;
             }
         }
         else if(dbAnswer == "C"){
             if(dbAnswerC[idQuest] == trueAnswer[idQuest]){
                 answer += 1;
             }
         }
         else if(dbAnswer == "D"){
             if(dbAnswerD[idQuest] == trueAnswer[idQuest]){
                 answer += 1;
             }
         }
         nextQuestion();
     }
 
     void  nextQuestion(){
         idQuest += 1;
         if (idQuest <= (question - 1)) {
                
         quest.text = dbQuest [idQuest];
         answerA.text = dbAnswerA [idQuest];
         answerB.text = dbAnswerB [idQuest];
         answerC.text = dbAnswerC [idQuest];
         answerD.text = dbAnswerD [idQuest];
        
         ....