M: I hear Peter is in the hospital. What's the matter with him? ,F: He doesn't get enough exercise, so he's getting fat. Now he has heart disease.
(A) M: How did Peter get heart disease? He does enough exercise every day. (B) M: Ah! Peter had heart disease! (C) M: I am really sorry, I did not catch that. Would you slow down, please? (D) M: How can Peter get fat since he gets enough exercise?
B