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.

Example Input: M: Please be careful with the collar because it is made of fur. ,F: Sure, Sir. We will dry clean it.
(A) M: I would like some medicine for my stomachache. (B) M: I am really sorry, I did not catch that. Would you slow down, please? (C) M: This is my first time coming to your laundry. Please take good care of my coat. (D) M: What kinds of shelves do you have in your furniture shop?
Example Output: C

Example Input: M: Did you hear the 6:00 o'clock news? ,F: No, I didn't, was there anything interesting? ,M: They've built another space station. They will send it up sometime next year. ,F: Oh, I've read about the plans somewhere. ,M: Just think, astronauts will live and do research work there. ,F: Really, but I wonder why you're so interested in such things. ,M: I've always been. I hope to go to the moon, one day.
(A) F: OK, I see. You mean you are interested in such news just because you hope to go to the moon, right? (B) F: Excuse me, could you repeat the question? (C) F: You are interested in such news just because you hope to go to the moon? Well,  I've never read about the plans. (D) F: You are interested in such news just because you want to do research in space? But they've not built another space station.
Example Output: A

Example Input: F: Excuse me, do you know when the train will arrive? ,M: I'm sorry, the train is behind schedule.
(A) F: You mean the train that has arrived is crowded, right? (B) F: I am afraid I did not quite catch what you were saying. Please repeat it. (C) F: Although the train is late, it has arrived. (D) F: Do you mean the train that has arrived is on time?
Example Output:
B