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.

Input: Consider Input: F: How soon will Nancy come back?
(A) M: Well, I see Amy just once every two months. (B) M: Thanks for your concern. She will come back in a month. (C) M: I am afraid I did not quite catch what you were saying. Please repeat it. (D) M: You are right! Amy will go the university in a month.

Output: B


Input: Consider Input: M: Can I help you Madam? ,F: Yes, thank you. I seem to have lost my room key. ,M: Take it easy. You can go to the front desk to get the spare one.
(A) F: Thank you. I'll go to the front desk and get the spare key right now. (B) F: I am afraid I did not quite catch what you were saying. Please repeat it. (C) F: Okay, I won't leave the office until you give me the spare car keys. (D) F: Thank you so much for helping me check in.

Output: A


Input: Consider Input: F: Did you go to listen to the speeches yesterday? I mean at the conference. ,M: Yeah, I did. I listen to these so-called keynote speech about physical geography by Professor Henry Hadley. Long and boring. I left the lecture hall before he finished. ,F: Where did you go? ,M: I went to the library and borrowed some books and then watched some videos in the dormitory. Did you stay in the lecture hall all afternoon? ,F: Yes, another 3 professors gave speeches. Mark Lowcock, Heather Anewet and Jackson Lee.
(A) M: I visited my professor to discuss homework after leaving the lecture hall. (B) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (C) M: I went straight to the library and borrowed books after leaving the lecture hall. (D) M: I went straight to the library after Professor Henry Hadley's speech was done.


Output: C