Interfacing

interface IAnswer
{
  
}

interface IQuestion
{
  IAnswers[] Answers { get; }
}


class SimpleAnswer : IAnswer
{

}

class SimpleQuestion : IQuestion
{
  //is possible to declare the Answers array like this:
  SimpleAnswer[] Answers { get; private set; }
  //rather than this:
  //IAnswer[] Answers { get; private set; };
}