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: I know you pay a lot of attention to exercise in your daily life. Could you tell me something about exercise? ,M: OK. I'm just interested in exercise. The importance of exercise is nothing new. Thomas Jefferson once wrote that to be successful and academic studies, a person should give about 2 hours everyday to exercise. ,F: 2 hours every day? I can't do that. ,M: Most experts today do not demand 2 hours of daily exercise. They recommend that people get 60 minutes of moderate to vigorous physical activity most days of the week.
(A) F: Well, I see, jogging for 2 hours everyday is pretty challenging, but I'll have a try. (B) F: Well, I don't think doing exercise for 1.5 hours every Monday is tough. (C) F: Okay, reading for 1 hour everyday is not hard, I think I can do that. (D) F: Excuse me, could you repeat the question?

Ex Output:
D


Ex Input:
F: Excuse me. I will stay in the city for a few days and I'd like to know what's on. ,M: Well, there's a teahouse at the Capital Theater. They say the play is very good. ,F: When is it on exactly? ,M: Every night except Sunday. Hold on...Yes, the show will run until the beginning of July. It begins at 8 o'clock and lasts more than 2and a half hours, finishing at 10:45. Here, take this flyer. It tells you more.
(A) F: I've never thought before that the old house is yours. (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: Thank you for telling me the information about the play. (D) F: The famous theater is mine, you don' t know it!

Ex Output:
C


Ex Input:
M: What about giving us more money? ,F: I'm sorry. But the local government doesn't have anymore money for the zoo. ,M: But if we don't find a solution soon, we'll have to close it. And the zoo was part of the city. It's a tourist attraction. ,F: Yes, but that's the point. It simply isn't attracting enough tourists. You're going to have to find the money from somewhere else.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: I have to admit that you are right. We are struggling to attract more tourists to our zoo. (C) M: How can you say that the zoo should be closed? We still have plenty of money to update the equipment. (D) M: I agree. The zoo is under poor management and hardly attractive, so I never want to go there again.

Ex Output:

B