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: And so tired! I've been up late studying for the math exam for the last 2 nights. ,F: I have, too. But I'm so nervous that I can't fall asleep at night. ,M: Maybe you can drink a glass of milk and take a bath before going to bed.
(A) F: I didn’t hear you. Please could you tell me again? (B) F: Yes, it is a best way to relax. (C) F: How about your study report? (D) F: Since we have taken too mu time on Chinese exam, I think we should have a good rest.

Ex Output:
B


Ex Input:
M: What's your favorite subject, Lily? ,F: I used to like math, but now I feel it's so difficult for me. And physics, too. I fall in love with English.
(A) M: So English is your favorite subject, right? (B) M: Why didn't you like English now? (C) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (D) M: So Math is your favorite subject, right?

Ex Output:
A


Ex Input:
M: I'm so bored I have nothing to do at work. I just surf the Internet all day long. ,F: Damn, I'm so busy at work and it's driving me crazy. I really wish I had your job.
(A) M: I'm so bored about the driving lessons I have to go. (B) M: I want my work to be as busy as yours. (C) M: I'm so busy that I have no time surfing the Internet. (D) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that?

Ex Output:

B