F: You look really different, Joe. Have you been working out? ,M: I'm on a special weight gain, an exercise program. Feel my muscles.
(A) F: It seems that the weight drop and exercise program doesn't work, you look the same as before. (B) F: Excuse me, could you repeat the question? (C) F: Well, I don't think  the weight gain and exercise program you took is useful, because you are fatter. (D) F: Oh,you're strong, the weight gain and exercise program you took is very useful.
D