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: You don't look very happy. What seems to be the problem? ,F: I've got to write a long composition for my English class and I just can't come up with any idea and it's due tomorrow.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: You can go to the teacher's office. You can ask the teacher to help you with your French composition. (C) M: You don't look well. Don't worry. You still have many days to prepare for a long composition. (D) M: Maybe, Lily can help you with your long composition in French which is due to tomorrow.

Ex Output:
A


Ex Input:
F: What time is it, Steven? ,M: Uh, it's 7:30. Aren't you going to finish your breakfast? ,F: I don't have much time. I've got a lot to do downtown today. ,M: If you're coming into the city, we may have lunch together.
(A) F: Well, we are living in the center of the city, so since today we are going to the countryside, I think it will take a long time to go there. (B) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) F: That's awesome, but you know we are living out of the city, so perhaps I'll be late for a few minutes fot the aerobics class. (D) F: That's great, but you know we are living out of the city, so perhaps I'll be late for a few minutes.

Ex Output:

D