F: Well, hello, Mr Atkins. I haven't seen you for weeks, where have you been all this time? ,M: Oh, I've just been to Japan on business. ,F: You sure get around. How many countries have you been to?
(A) M: I can't even remember! I just came back from Japan on vacation. (B) M: I can't even remember! I just came back from a business trip in Japan. (C) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) M: I can't even remember! I just came back from Japan on leave.
B