I want to solve the question c#

Question

Instructions
Understand the Classes: Review the provided classes Exam, Question, Essay, TrueFalse, MultipleChoice, and TakeExam.

Write the Main Function:

Create an instance of Exam.

Add questions to the exam.

Create an instance of TakeExam and start the exam.

ExamTypeEnum
enum ExamTypeEmum
{
Quiz,
Mid,
Final
}

Abstract Question Class
abstract class Question
{
public int ID { get; set; }
public string CorrectAnswer { get; set; }

public bool IsCorrect(string answer)
{
if (!Validate())
{
Console.WriteLine("Question is not valid");
return false;
}
return answer == CorrectAnswer;
}

public abstract bool Validate();
}
Essay Class
class Essay : Question
{
public string Text { get; set; }

public override bool Validate()
{
return !string.IsNullOrEmpty(Text);
}
}

TrueFalse Class
class TrueFalse : Essay
{
public string Choice1 { get; set; }
public string Choice2 { get; set; }

public override bool Validate()
{
return base.Validate() && !string.IsNullOrEmpty(Choice1) && !string.IsNullOrEmpty(Choice2);
}
}
MultipleChoice Class
class MultipleChoice : TrueFalse
{
public string Choice3 { get; set; }
public string Choice4 { get; set; }

public override bool Validate()
{
return base.Validate() && !string.IsNullOrEmpty(Choice3) && !string.IsNullOrEmpty(Choice4);
}
}

Exam Class
class Exam
{
public int ID { get; private set; }
public ExamTypeEnum ExamType { get; private set; }
public DateTime ExamDateAndTime { get; private set; }
private List<Question> Questions { get; set; }

public Exam(int id, ExamTypeEnum type, DateTime examdate)
{
Questions = new List<Question>();
ID = id;
ExamType = type;
ExamDateAndTime = examdate;
}

public void AddQuestion(Question question)
{
Questions.Add(question);
}

public void RemoveQuestion(Question question)
{
Q

Answer 1

Houdefa AL-REFAY, Try it by yourself first.

Answer 2

Houdefa AL-REFAY
comment out some lines in your code:
//ExamTypeEnum
//AbstractQuestionClass
.... etc.

You should include necessary libraries

Structure your code properly under a namespace...

You have typos in ExamTypeEmum in several places... maybe you mean ExamTypeEnum?

Answer 3

What do you need in the main? Is it not working, post the code as per this guide and someone could help you:

https://sololearn.com/compiler-playground/Wek0V1MyIR2r/?ref=app