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.

Example Input: M: Lily, I can't catch up with the English teacher very well. ,F: What's the problem? ,M: You are quite good at English. Can you help me with it? ,F: Sure, but you'd better take an additional course in some English schools. ,M: English schools? What's that? ,F: This kind of school is good at helping people to improve their English. ,M: Is that different from our school's English course? ,F: Yes. Before you start your training, they will test you on your English first.
(A) M: Why do they charge such high fees? What's more, how can they know my English ability without any tests? (B) M: Our high school will test my English before training, right? (C) M: Why do they need to test my English before training? (D) M: Excuse me, could you repeat the question?
Example Output: C

Example Input: M: That is a very nice shirt. Did you just buy it? ,F: Yeah, I bought it yesterday. It was kind of expensive, but I just love wearing red.
(A) M: That blue color matches your makeup perfectly. (B) M: The color suits you perfectly. (C) M: I agree. The price is quite reasonable. (D) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that?
Example Output: B

Example Input: F: Hey, do you know if it's possible to get to Los Angeles from San Francisco by train? ,M: Yeah, it is. But why don't you fly? It's much faster and costs about the same. ,F: No way. I hate flying. Do you know how long the train takes? ,M: Well, the quickest route is through the center of California. You can start in Sacramento, but it's not a very good route. If you take the train along the coast, it is much more beautiful. It's a great way to see California.
(A) F: So the view from the train along the coast is the most beautiful. Thank you for the suggestion! (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: Taking the train along the coast is a great way to see California, so I will fly there first and then change to the train. (D) F: I will take a bus to go through the center of California to see this city, as you suggest.
Example Output:
A