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: Where are you going for your birthday tomorrow? ,M: I have booked a room in the Blue Bay Restaurant. ,F: You mean the Blue Sky Restaurant? ,M: No, that's the Blue Bay, just across from the Blue Ocean Restaurant.
(A) F: The Blue Ocean Restaurant is opposite the Blue Bay Restaurant, right? (B) F: I'm sorry, I didn't catch that. Would you mind speaking more slowly? (C) F: You have booked a room in the Blue Ocean Restaurant? It is the one which is beside the Blue Sky Restaurant, right? (D) F: You have booked a room in the Blue Ocean Restaurant? It is the one which is opposite the Blue Bay Restaurant, right?

Ex Output:
A

Ex Input:
M: How was your school today Rosa? ,F: It was fun. Our class went on a trip to the Museum of Modern Art. ,M: So you went there? How did you get there? ,F: We took the bus it was crowded?. ,M: How was your trip to the museum? ,F: It was great, it is so big that we only saw about half of the paintings. I'd have to go back another day to see them all but I did see some great ones.
(A) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) M: You can see almost all the paintings because the museum is small, right? (C) M: Although you saw about half of the paintings, the museum is small. (D) M: You've seen about half of them. That's amazing.

Ex Output:
D