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: The film starts at 7:30. So, shall we meet at 6:00 o'clock? We could go for a meal first. ,F: 6:00 o'clock is a bit early for me. I've to finish a report this afternoon. How about 7:15 outside the cinema? We could always go for something to eat after the film. I think it finishes at about 9:30.
(A) M: Excuse me, could you repeat the question? (B) M: Sure. We can meet at my house at 7:15. (C) M: OK. See you at outside the cinema at 7:15. (D) M: Sure. Let's meet at 7:30 outside the restaurant.

Ex Output:
C


Ex 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.

Ex Output:
A


Ex Input:
M: Nice to see you, Mary! Come in, please! ,F: Thank you Tom, but I am afraid not now. I've come only to return the book borrowed from you. ,M: Wonderful. I've been waiting for you a long time and longing to know what you think of it. ,F: It is very interesting and I've learned a lot from it. ,M: Well, so it is with me.
(A) F: I'm here to ask you for help. (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: I'm here to invite you for dinner. (D) F: Now, here is the book to be returned.

Ex Output:

D