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: Researchers in America did some experiments to try to figure out why some people gain weight more than others do. ,F: Yeah, some people can eat whatever they want and they never seem to gain a pound. ,M: In this study, volunteers were given 1000 extra calories a day. About 2 pieces of cheese's worth of extra intake. ,F: This kind of study I'd like to be in.
(A) M: You prefer excise and you don't want to take 1200 extra calories so you don't like this experiment. (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: Because you want to lose weight and you don't want the extra 1200 calories but you still want to join the experiment. (D) M: Because you enjoy the food.
Example Output: D

Example Input: F: May I speak to Mr Brown please? ,M: Oh, sorry. He isn't in at the moment. ,F: When will he be back then? ,M: Sorry, I don't know. Can I take a message? ,F: Certainly.
(A) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (B) M: I'm so glad to talk to you through phone, Mr Brown. (C) M: All right. Please tell him that I called and I want to invite him for a party. (D) M: I'm so happy to meet you in the meeting room, Mr Brown.
Example Output: C

Example Input: F: Good afternoon, what can I do for you? ,M: Yes, please. I would like to know something about the driving courses. ,F: Well, We have short full time courses during the summer. Are you interested in them? ,M: No, I am free only at weekends. ,F: Then there are weekend courses. The course starts at 8:00 every Saturday and Sunday morning. ,M: Sounds fine. What about the coaches?
(A) F: Do you mean that you would like to take full-time summer courses to learn how to repair cars? (B) F: I’m sorry, I don’t understand. Could you say it again? (C) F: If you want to take full-time winter courses since you are free during weekends as well as winter. (D) F: Since you have chose the weekend courses, I have to tell you the courses will start at 9:00 everyday.
Example Output:
B