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: Look at this armchair, what do you think? ,F: Oh, I'm not sure I like the design. It's too heavy looking. Is it comfortable? ,M: Try it. ,F: Uhm, It's really comfortable. And I'd like to have something this size. Our old armchair is way too small. This size is perfect.
(A) M: As I said, you really liked the design of the armchair. (B) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (C) M: So you like the color of this armchair but you think it is too light? (D) M: Yes, as you like, the size of the armchair is perfect.
Example Output: D

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: F: There is only 20 minutes left. I've got an appointment. I'm meeting a friend in the City of Westminster at 9:00 AM. I hope not to miss it. ,M: Well, I'm going there, too. I can give you a lift if you like.
(A) F: I am afraid I did not quite catch what you were saying. Please repeat it. (B) F: Great! It is 9:20 am now. We still have 20 minutes to go. (C) F: Great! It is 8:40 am now. We still have 50 minutes to go. (D) F: Great! It is 8:40 am now. We still have 20 minutes to go.
Example Output:
D