Creating a list of class objects

Unity Engine
1

I would like to create a list of the class objects but cant get it working :frowning:

public class WriteAnswer
    {
        public string question1;
        public string answer1;
        public string answer2;
        public string answer3;

        public WriteAnswer(string q1, string a1, string a2, string a3)
        {
            question1= q1;
            answer1= a1;
            answer2= a2;
            answer3= a3;
        }
    }

Then I would like to make a list of few question and answers objects:

public List<WriteAnswer> qa = new List<WriteAnswer>();

And add new objects:

    private void Start()
    {
        qa.Add("What is it?", "Answer1", "Answer2", "Answer3");
    }

It doesnt want to work. Can you help me with this one, please?

2 
qa.Add(new WriteAnswer("What is it?", "Answer1", "Answer2", "Answer3"));