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: If you want to get the washing machine fixed in time, you'd better get a mechanic to do the job rather than do it by yourself. ,M: You have a point, but you know I'll have to wait for a long time to get a mechanic.
(A) F: But a mechanic is an expert. He can fix the washing machine. (B) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) F: Okay, I'll call for a mechanic to fix the fridge in time. (D) F: Okay, I'll call for a mechanic to fix the TV in time.

Ex Output:
A


Ex Input:
M: I'll pick you up at 10:45 tomorrow morning. ,F: How long will the journey last? It's a 3 and a half hour drive. And we should give ourselves 40 minutes to have lunch and another 10 to wait for the ferry.
(A) M: Your flight will take off at 10:45. (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: I want to travel to Chicago by train. (D) M: Don't worry, we have enough time to go on board.

Ex Output:
D


Ex Input:
M: Talking about the future. I think there will be huge changes in the way people use cars. Laws will be made about what kind of car you can own and when you can use it. ,F: Maybe they'll just be too many of them on the roads. The air will be so seriously polluted that nobody will be able to breathe normally. ,M: Exactly. People will have to rely on trains.
(A) F: I am afraid I did not quite catch what you were saying. Please repeat it. (B) F: I see. You believe that trains will change a lot while cars remain the same, so people would choose trains more often. (C) F: Why do you think that cars will be the most common kind of transportation many years later? (D) F: Oh, why you think people will rely on trains in the future?

Ex Output:

D