F: I like that photo on the wall. ,M: Oh, thank you. It's a photograph that I took on my vacation last month.
(A) F: Really? That photo on the wall was taken on your conference last week? (B) F: You mean that you took the photo on the wall on your vacation last month, right? (C) F: OK, I see. You took that photo on the desk last month. (D) F: I am afraid I did not quite catch what you were saying. Please repeat it.
B