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:
F: How soon will Nancy come back?
(A) M: Well, I see Amy just once every two months. (B) M: Thanks for your concern. She will come back in a month. (C) M: I am afraid I did not quite catch what you were saying. Please repeat it. (D) M: You are right! Amy will go the university in a month.

Ex Output:
B


Ex Input:
F: So how's your new job going, David? ,M: It's going really well. I started 2 months ago and it's great. ,F: Which countries are you flying to? ,M: Mostly those in South America.
(A) F: I'm very happy that you're used to this job on the plane. I was a little worried when you first started a month ago. (B) F: So you do like your work on the plane, don't you? (C) F: Excuse me, could you repeat the question? (D) F: Does that mean the restaurant you work in South America?

Ex Output:
B


Ex Input:
M: Wow, this dance is surely cool. There are so many people here. Uh, what's your name? ,F: Susan, Susan Dawes. You really don't know who I am? You sit behind me in geography class. ,M: Oh yeah, you're right. I guess I'm just used to looking at the back of your head, not your face. ,F: Are you OK? You're so nervous. ,M: I'm sorry for my strange behavior. I don't know why I pretended I didn't know who you were. I just didn't know how to start the conversation.
(A) F: It's okay, you behaved cool just now. (B) F: So every time you don't know how to start a conversation, you behave awkward, right? (C) F: Never mind, you are polite. (D) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly?

Ex Output:

B