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 ever taken History 231? ,F: Yeah, last term. ,M: Who was the professor? ,F: Professor Johnson. ,M: I have him this semester. What do you think of him? ,F: He's a terrible instructor and demands a lot, but fortunately we can get high scores easily in his class. ,M: What did you get? ,F: I got an A, but none of my test scores were that high. So I don't know how I got such a good score. ,M: Really? I was about to give it up, but after hearing your experience, I think I will continue to stay in the class. ,F: You will get a better grade than your test scores. ,M: Thanks for the information. I feel relieved now.
(A) F: You are welcome. Wish you well in the new class. (B) F: You are welcome. Just go and have a talk with Professor David. (C) F: No worries, stay and you will get a good score. (D) F: I’m sorry, I don’t understand. Could you say it again?
Example Output: C

Example Input: M: What's up? Are you still studying? ,F: Yeah, I'll be added all night. ,M: When's the big test? ,F: Not for 3 days but I have too many things to remember before then. ,M: You're taking this Spanish class so seriously. Don't you think you should lighten up a bit? ,F: I can't. Not only do I need to get good grades but I also have to actually learn this stuff. Next year I'm applying to a nursing program and they give special financial help to students who speak 2 languages.
(A) M: So you try so hard to learn Spanish only because you want to get financial help from school? (B) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (C) M: So you try so hard to learn Spanish only because you want to travel in South America? (D) M: Oh, you try so hard to learn math only because you want to get financial help from school, right?
Example Output: A

Example Input: M: Will it take long to get to the Overseas Chinese Hotel? ,F: About 30 minutes. What time is it by your watch now? ,M: Well, it's a quarter past 11.
(A) F: So we can get there at 11:35. (B) F: So we can not get there at 12:00. (C) F: So it is impossible that we get there at 11:45. (D) F: Excuse me, could you repeat the question?
Example Output:
D