Question Fuffff quiz game, lets stop button selection after selecting right or wrong button :D

Fuffff quiz game, lets stop button selection after selecting right or wrong button
How to block it inside CheckAnswer guys? Now it is possible to select A B C D at the almost same time...

using System.Collections.Generic;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

public class QuizManager : MonoBehaviour
{
public TextMeshProUGUI questionText;
public List<Button> answerButtons;

private List<Question> questions;
private Question currentQuestion;

private void Start()
{
questions = QuestionData.GetQuestions();
NextQuestion();
}

private void NextQuestion()
{
if (questions.Count == 0)
{
// No more questions left
EndQuiz();
return;
}

// Pick a random question + Button colours set to white
foreach (Button button in answerButtons)
{
button.GetComponent<Image>().color = Color.white;
}

int randomIndex = Random.Range(0, questions.Count);
currentQuestion = questions[randomIndex];
questions.RemoveAt(randomIndex);

// Update question text
questionText.text = currentQuestion.question;

// Update answer buttons
for (int i = 0; i < answerButtons.Count; i++)
{
answerButtons.GetComponentInChildren<TextMeshProUGUI>().text = currentQuestion.answers;
int index = i; // Capture the current value of i
answerButtons.onClick.RemoveAllListeners();
answerButtons.onClick.AddListener(() => CheckAnswer(index));

}
}

private void CheckAnswer(int buttonIndex)
{
Button selectedButton = answerButtons[buttonIndex];

if (currentQuestion.correctAnswerIndex == buttonIndex)
{
// Correct answer
selectedButton.GetComponent<Image>().color = Color.green;
selectedButton.GetComponentInChildren<TextMeshProUGUI>().text = "Correct Answer";
Invoke("NextQuestion", 2f);
}
else
{
// Incorrect answer
selectedButton.GetComponent<Image>().color = Color.red;
selectedButton.GetComponentInChildren<TextMeshProUGUI>().text = "False Answer";
Invoke("ResetQuiz", 1f);
}
}

private void ResetQuiz()
{
// Reset the quiz after 5 seconds
foreach (Button button in answerButtons)
{
button.GetComponent<Image>().color = Color.white;
button.GetComponentInChildren<TextMeshProUGUI>().text = "";
}

questionText.text = "";
NextQuestion();
}

private void EndQuiz()
{
// Quiz has ended
// Add any necessary actions here
}
}

 

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