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.

Ex Input:
M: I'll pick you up at 10:45 tomorrow morning. ,F: How long will the journey last? It's a 3 and a half hour drive. And we should give ourselves 40 minutes to have lunch and another 10 to wait for the ferry.
(A) M: Your flight will take off at 10:45. (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: I want to travel to Chicago by train. (D) M: Don't worry, we have enough time to go on board.

Ex Output:
D


Ex 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.

Ex Output:
A


Ex Input:
F: I'm pretty busy these days. I was given a new research project by the professor. He asked me to find research information about countries in Asia. ,M: Isn't it interesting? ,F: Yes, and there's much information I can get. But I was told to finish it in 3 days.
(A) M: So, there's much information you can get and you have to finish the research project in three days? (B) M: So, it's not interesting and you have to finish the research project in three days? (C) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (D) M: Really? You were told to finish it in 4 days and you have to travel in Asia?

Ex Output:

A