If Someone Asks a Question That You Cannot Answer,________

If someone asks a question that you cannot answer,________.

A) never say "I don't know"
B) dismiss the question,saying that you will answer it later
C) don't be afraid to say,"I don't know"
D) maintain your credibility by trying to bluff your way around the question
E) dismiss the question as irrelevant to avoid having to admit that you don't know