Given the task definition and input, reply with output. In this task you are given a small conversation between two persons and 4 options on how the conversation should continue. Your job is to choose the most reasonable option. The conversation and the options are separated by a newline character. Each dialogue in the conversation are separated by a comma. F and M indicate female and male, respectively.

F: Hello, Tom! Do you mean you're going away? ,M: Oh, yes. I've booked the ticket and it's time for me to go back home. ,F: Well, how long have you been in China? ,M: I've been here for 2 years.
(A) F: Are you leaving after only a week in China? But you haven't booked the ticket yet. (B) F: You've lived in China for two months, so you're going to live in another country for a while, aren't you? Then why don't you go home? (C) F: I didn't hear you. Please could you tell me again? (D) F: WOW! You have lived in China for two years!
D