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: Can I talk to you for a minute, Professor Smith? ,F: Sure, David. What can I do for you? ,M: I didn't get to copy down all the terms you mentioned in today's lecture and I know they were important.
(A) F: I am really sorry, I did not catch that. Would you slow down, please? (B) F: Thank you for trusting me and ask me for help with today's lecture. What kind of problem do you have? (C) F: Robin, I am sorry to know that you have missed all the classes last week, but it will not influence your final grade. (D) F: It is good that you want to learn how to take notes. Since there is no lecture today, let's review last week's class.
Example Output: B

Example Input: F: If you want to get the washing machine fixed in time, you'd better get a mechanic to do the job rather than do it by yourself. ,M: You have a point, but you know I'll have to wait for a long time to get a mechanic.
(A) F: But a mechanic is an expert. He can fix the washing machine. (B) F: I'm sorry, I didn't understand. Could you repeat a little louder, please? (C) F: Okay, I'll call for a mechanic to fix the fridge in time. (D) F: Okay, I'll call for a mechanic to fix the TV in time.
Example Output: A

Example Input: F: I never imagined the weather would be so warm. ,M: Well, that's what makes the place so crowded. But that's one aspect of it, I can't stand. ,F: At least that means there are many water sports competitions.
(A) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) M: But I still dislike the large crowd. (C) M: I dislike the large crowd, but the weather here is cool. (D) M: But I dislike the competitions because there is no water sports competition here.
Example Output:
B