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: Doctor Wilson, can I talk to you for a minute? ,F: Sure, Fred. What is it? ,M: I'm worried about my grade in your English Class. I really want an A, but. ,F: I see. Well, it might be hard for you to get an A. So far, you have a B average. You would need a 97 or 98 on your final exam to get an A. Do you think you can get that higher score? ,M: Probably not. The problem is that I have to have a B average in all the subjects to get the prize from our government. Otherwise, I'll have to find a part time job. I'm afraid it is difficult for me to put all my heart in my study if I have to work in my spare time. I'll probably get an A in history and a B in maths, but I'll get a C in chemistry.
(A) F: I am really sorry, I did not catch that. Would you slow down, please? (B) F: Sounds great that you can get A in history and maths. Happy for you! (C) F: You must have put in a lot of effort to get A in maths and chemistry! (D) F: Don' t be sad! At least you can get an A in history. Everything will be alright!
Example Output: D

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: Sunrise Hotel. Good morning. ,M: Hello, my name's John Griffin. I'd like to make a booking for tonight please. ,F: OK. What kind of room do you want? ,M: Well, I'm on a business trip. So I only need a single room. ,F: Let's look. Yes, there is one left. Shall I book it for you?
(A) M: Ok, please book that single room for me. Thank you. (B) M: Ok, thank you, a double room is exactly what I need. (C) M: Excuse me, could you repeat the question? (D) M: Since there are still many single rooms, please reserve a good one for me.
Example Output:
A