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 often do you exercise? Do you play any sports? ,M: I do sports at school, that's about 3 hours every week. But that's all. I don't do any sports outside of school. ,F: Not even any cycling or walking? ,M: Very rarely. Because my mom takes me to school in the car.
(A) F: Yeah. It's good for your health to go to school by bike, but you enjoy playing sports outside of school, don't you? (B) F: Since you walk to school, you can do five hours of exercise a week. (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: Then you are so happy that your mother can drive you to school.

Ex Output:
D


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:
M: I'm going to visit my brother in New York. I told him I would go there on the 10:00 o'clock flight. ,F: New York is a nice place. I think you'll enjoy your visit there.
(A) M: I'm sure I will. And New York is only an hour away by car, it's very convenient to get there. (B) M: Excuse me, could you repeat the question? (C) M: I'm sure I will. And Chicago is only 2 hours away by air. (D) M: I'm sure I will. And it only takes 2 hours by air.

Ex Output:

D