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: Wow, this dance is surely cool. There are so many people here. Ah, what's your name? ,F: Susan, Susan Dors. 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. ,F: That's OK. It's refreshing to talk to somebody who's actually honest for once, so do you like this music? ,M: Not really. I prefer rock and roll mostly. But I like to listen to blues when I'm alone. Anything but this pop stuff. ,F: Oh my gosh. I totally agree. I thought I was the only one.
(A) M: Excuse me, could you repeat the question? (B) M: You are not alone. By the way, the pop playing at the dance sounds awful. (C) M: No, you are not the only. Anyway, I like the blues playing at the dance. (D) M: But I really don't like the rock and roll playing at the dance.

Ex Output:
B


Ex 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.

Ex Output:
B


Ex Input:
F: Good afternoon, sir. ,M: Good afternoon. We want a table for 4. ,F: This way, please. It's near the window, so you'll have a good view. Sit down, please. ,M: Thank you. Do you serve good Chinese food? ,F: Yes, sir. We serve Chinese food of various styles, such as Hunan food, Sichuan food and Zhejiang food. The first two are a bit hot. Do you want to have a try? ,M: No, we like food that tastes a bit sweet. ,F: Then Zhejiang food will suit you. Here is the menu, and I'll bring some free juice for you.
(A) M: Thank you. We want to have some Hunan food today. (B) M: Thank you. We would like to have Sichuan food today. (C) M: Thanks. We want something sweet, so Zhejiang food will be fine. (D) M: I’m sorry, I don’t understand. Could you say it again?

Ex Output:

C