/// <summary>
/// Gets the next correct answer part based on how many answer parts have been
/// given so far.
/// </summary>
/// <returns>The next correct answer part.</returns>
public ProblemPart GetCurrentCorrectAnswerPart()
{
int answersGivenSoFar = givenAnswer.AnswerPartsCount();
if (answersGivenSoFar >= GetCorrectAnswer().AnswerPartsCount())
{
throw new Exception("There is no next correct answer part- all answer parts have already been given!");
}
ProblemPart nextCorrectAnswer = GetCorrectAnswer().GetAnswerPart(answersGivenSoFar);
return(nextCorrectAnswer);
}
