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: F: Can I help you, sir? ,M: Yes, I'm here to see the cars. ,F: Thank you. We have many brands. Do you have any particular brand in mind? ,M: Yes, I want to have a Ford. I need it badly for my work. But I don't have a lot of money. It must be very expensive, isn't it? ,F: Yes. Look, this model is newly developed and began to appear in the market just several weeks ago in America. It cost $43,800. But considering the high quality, it's worth it. ,M: That's why I shall choose it. But I'm afraid that I can't afford to pay in cash now. Can I pay regularly for the car in a year? ,F: Oh, yes. You can pay each month or the first time $13,800. And you must pay the remaining part in 12 months.
(A) M: Since, the way of payment is ensured, then please fill these files first. (B) M: I'm sorry, I don't understand. Could you say it again? (C) M: You don't have to worry about the quality of the car, daddy! (D) M: The function of the car is pretty good, you can have a try my son.
Example Output: A

Example Input: M: What are you studying in college? ,F: My major is computer science. ,M: Is it difficult to learn computer science? ,F: No, it's a piece of cake, I think.
(A) M: I didn't hear you. Please could you tell me again? (B) M: Why do you think computer science is difficult? (C) M: Computer science is really easy. (D) M: Oh, your major is international trade.
Example Output: C

Example Input: F: How was your trip, Dan? I'd love to go round the world. ,M: It was great. First we went to London but only for a few days as it rained all the time. Both of us got really wet. ,F: You went to Paris next, didn't you? ,M: Well, Paris wasn't at all, sunny, but it was better than London, a bit cloudy. ,F: Did you go up the Eiffel Tower? ,M: Yes. We both had a great time. ,F: Where did you go after Paris? ,M: To Sydney. We didn't get to the famous Bondi Beach as there were a lot of thunderstorms. We did some shopping there. ,F: I bet that was expensive. ,M: It wasn't as expensive as Tokyo. It was hot and sunny there, no rain at all for the whole 5 days we were there. ,F: And then you went to the USA, didn't you? ,M: Yes, to San Francisco, which is famous for its fog. It was so thick that we didn't go to see the Golden Gate Bridge. But it was warmer than some of the other places.
(A) F: So the weather was foggy in San Francisco. (B) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (C) F: So the weather was sunny in San Francisco. (D) F: So the weather was foggy in Tokyo.
Example Output:
A