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:
M: Shirly, I'm working on our class diary for next week. Would you please give me the information? ,F: Sure. First is the deadline for after class activity application. The deadline is next Monday, June fourteenth. ,M: Monday, June fourteenth. ,F: Yes, then on Wednesday, that's the sixteenth, all classmates have to hand in three student photos. ,M: Three student photos. ,F: OK. Next is the basketball club meeting. It's on the seventeenth. ,M: The basketball club meeting on the seventeenth, and where will they meet? ,F: At the stadium. ,M: And at what time? ,F: From 12:45 to 1:30 PM. ,M: Right. ,F: Then the last thing is about filling in a form with up-to-date personal data. Our class needs to go to the computer room during the morning break on the eighteenth. ,M: OK. The morning break on the eighteenth. ,F: Ah, wait a minute. I made a mistake. It should be during the lunch break.
(A) M: It's OK. You just made a mistake about the place. (B) M: It's fine. You are wrong about the event on the eighteenth. (C) M: I’m sorry, I don’t understand. Could you say it again? (D) M: It's fine. You are just wrong about the time of filling in the form.

Ex Output:
D


Ex Input:
M: How much is the cap? ,F: 8 yuan for 1, 14 yuan for 2, and 18 yuan for 3. ,M: Then I'll take 3.
(A) F: 8 yuan, please. (B) F: OK. These four caps cost 18 yuan. (C) F: 14 yuan, please. (D) F: I am afraid I did not quite catch what you were saying. Please repeat it.

Ex Output:
D


Ex Input:
F: Didn't Betty go shopping with you yesterday? ,M: Even if she hadn't had a lot of studying, she would have preferred staying home to going shopping.
(A) F: Yeah. She went shopping with me yesterday. (B) F: Yeah. She prefers going shopping to studying home, although she doesn't like going shopping. (C) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) F: Yeah. She prefers going shopping to studying home.

Ex Output:

C