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: Hi jack, what did you think of the lecture you attended last night? ,M: Well, I should have stayed at home. And half of people had left before it was finished.
(A) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) F: Yes, it is so moving! (C) F: Yes, the concert yesterday was really boring. (D) F: Why do you think it was boring?

Ex Output:
D

Ex Input:
F: Welcome to our program. Today we have invited Fred Watson, an expert on the environment to talk to us.
(A) M: Nice to meet you guys. Let' s talk about environmental problems today. (B) M: Hello, everyone! My name is Bob, today, let' s talk about modern technology. (C) M: I'm sorry, I don't understand. Could you say it again? (D) M: Thanks, I' glad to be your studio. Today, our topic is about industrial development.

Ex Output:
A

Ex Input:
M: Hello, Mary. This is Ted. My flight just landed. I thought you had arranged for someone to meet me here and take me to the hotel. ,F: I did. Wasn't there someone holding a sign with your name on it? ,M: No, there wasn't. I have collected my luggage and now I'm not sure what to do. ,F: OK, wait for a moment and I'll get someone there as soon as possible. Sorry for the inconvenience.
(A) M: Mary, please order the recent flight for me to Tokyo. I will leave the company in 5 minutes. (B) M: Hi Mary, Do you know where I can check in my luggage? (C) M: Thank you, if there is no one picking me up, I can take a cab. (D) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that?

Ex Output:
C