You will be given a definition of a task first, then some input of the task.
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.

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.
Output:
B