M: That was a great party. Thanks for staying behind to help me clear up.
(A) F: You are welcome. I feel happy to help you prepare some food for the wedding. (B) F: It is OK. Doing the dishes before the dinner is relaxing, mom. (C) F: That is OK. I should help you clean up the place. We just had a good time. (D) F: Excuse me, could you repeat the question?
C