array problem index out of range ? why ?

     private List<string[]> questions  = new List<string[]>();
     private List<int> answerOrder = new List<int>(new int[] {1,2,3,4,5});
 
     void DrawInfo() {
         Rect rect = new Rect(500, 100, 400, 200);
         Rect close = new Rect(600, 500, 200, 100);
         if(GUI.Button(close, "ATTACK")) {
             Poop = !Poop;
         }
 
         if (Poop) {
             GUI.Box(rect, Info);
             GUI.Label(new Rect(520, 110, 400, 30), questions[0][0]);
             if (GUI.Button(new Rect(520, 200, 100, 30), questions[0][answerOrder[0]])) {
                 HandleAnswer(answerOrder[0]);
             }
             if (GUI.Button(new Rect(520, 250, 100, 30), questions[0][answerOrder[1]])) {
                 HandleAnswer(answerOrder[1]);
             }
             if (GUI.Button(new Rect(780, 200, 100, 30), questions[0][answerOrder[2]])) {
                 HandleAnswer(answerOrder[2]);
             }
             if (GUI.Button(new Rect(780, 250, 100, 30), questions[0][answerOrder[3]])) {
                 HandleAnswer(answerOrder[3]);
             }
           if (GUI.Button(new Rect(780, 250, 100, 30), questions[0][answerOrder[4]])) {
                 HandleAnswer(answerOrder[4]);
             }
         }
     }
 
   
     void Start() {
         // String order: question, correct, wrong, wrong, wrong
         questions.Add(new string[] { "What in the capital of France?", "Paris", "New York", "London", "Madrid" });
         questions.Add(new string[] { "Which of these is an amphibian?", "Frog", "Shark", "Lizard", "Hawk" });
         questions.Add(new string[] { "Which of these is an planet?", "Neptune", "Thor", "Pegasus", "Hera" });
     questions.Add(new string[] { "Which of these is smallest planet?", "Pluto", "Thor", "Pegasus", "Hera" });
     questions.Add(new string[] { "What in the capital of Philippines?", "Manila", " Las Pinas", "Makati", "Bulacan" });
         Shuffle(questions);
         Shuffle(answerOrder);
     }
 
     void NextQuestion() {
         questions.RemoveAt(0);
         Shuffle(answerOrder);
     }
 
   
     static readonly System.Random rng = new System.Random();
     public static void Shuffle<T>(IList<T> list) {
         int n = list.Count;
         while(n > 1) {
             n--;
             int k = rng.Next(n + 1);
             T value = list[k];
             list[k] = list[n];
             list[n] = value;
         }
     }
 }

what happens is when i run it error will occur saying array index is out of range and i dont know how to fix it please help me thankyou