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: Have you decided whether to rent a room off campus next semester or still stay in the dormitory? ,F: We're still talking about that. Lissy's mom wants her to stay at home. ,M: You always hesitate in making decisions.
(A) F: Yes, although I am living in the dormitory this semester, I still can't decide where to live next semester. (B) F: Excuse me, could you repeat the question? (C) F: Why do you say that? Since I am living in the dormitory this semester, I have decided to live in the dormitory next semester. (D) F: Although I live at home this semester, I may not be able to next semester because Lissy's mother doesn't want her to live at home.
Example Output: A

Example Input: M: Excuse me, can I join the library? ,F: Are you a student of our college? ,M: No, I'm not. But I hear that it's open to the public. ,F: That's right. ,M: OK. Does it cost anything to join? ,F: Well, it's free for students of our college while it is 125 pounds per year or 35 pounds per quarter for the public.
(A) M: I am really sorry, I did not catch that. Would you slow down, please? (B) M: That means if I pay by year, it will save me 15 pounds a year. Sounds good. (C) M: Wow, that will save me 25 pounds if I pay by month! That's a real bargain. (D) M: Sounds good! I just pay 35 pounds for the whole year! I'd like to join this library.
Example Output: B

Example Input: M: Have you received a chapter 16 of supermarket killers yet? I think there's something wrong with my phone. ,F: Nobody has received it yet. I really want to know what happens, the suspense is killing me. ,M: Exactly. You know, I think 20 Chapters is too short. I hope his next story is 30 chapters long.
(A) F: I agree with you. I also think 20 Chapters is too long. Let's talk more about this story. (B) F: Yeah, I agree with you. Let's talk more about this story. (C) F: I am really sorry, I did not catch that. Would you slow down, please? (D) F: Yeah, I really don't want to know what happens. Let's talk more about this movie.
Example Output:
B