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: 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: M: Hello, reservation desk. How can I help you? ,F: I'd like to book a room. ,M: And what kind of room would you like ma'am? And we got single rooms, double rooms, standard rooms, sweets and Delux sweets. ,F: What's the rate for a standard room? ,M: $79 a night. ,F: I'd like a standard room. ,M: What date would you check in ma'am? ,F: December twenty-third, please. ,M: How long do you plan to stay? ,F: Four days.
(A) M: So, you mean you plan to stay three days and you will check out on December 23rd? (B) M: I am afraid I did not quite catch what you were saying. Please repeat it. (C) M: So, you plan to stay 4 days and you will check out on December 27th? (D) M: Oh, I see. You would like a single room and will check out on  December 27th.
Example Output: C

Example Input: M: Jane, have you ridden the subway? ,F: Yes, I go to work by underground everyday. ,M: On the Internet, there are 9 most beautiful subways in the world. ,F: Is the Shanghai Bund Tourist Tunnel included in it? ,M: Yes. Have you been there? ,F: Yes, I went to Shanghai last month. The Bund Tourist Tunnel connects two best attractions of Shanghai, the Bund and Lujiazui. The tunnel itself is like a light show. You will see the flashing lights, colorful lines and circling images projected on to the real walls. ,M: Yes, it is so magical. Can you show me other subways?
(A) F: I’m sorry, I don’t understand. Could you say it again? (B) F: No problem. I just went to Shanghai last month. (C) F: Sure. I just went to Shanghai last week. (D) F: No problem. I just went to Beijing last month.
Example Output:
B