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: Congratulations on your new job. I know you worked hard for it, cheers. ,M: Cheers, it has been a pleasure working with you all these years. I'll make sure to come back and visit next month. ,F: You'd better. Work won't be the same without you. So when do you start? ,M: I went in today to fill out some paperwork but I won't start until the following Monday.
(A) F: You are starting tomorrow? That's real quick. (B) F: Excuse me, could you repeat the question? (C) F: Oh, you will start tomorrow instead of next week. (D) F: You will start next month? What are you going to do these days?
Example Output: B

Example Input: F: Excuse me, are you going to buy that textbook? ,M: Well, yeah, I need it for a class. But it's awfully expensive. ,F: Oh, we must be in the same class! Civil engineering? ,M: Yes, that's the one! ,F: Were you there last Friday for the first class? ,M: Yes. I only moved here last Monday, and I registered for the class last Tuesday. By the way, I thought Professor Qian really seemed to know his subject.
(A) F: Great. Since you moved here last month, you must have your first class last Monday. (B) F: Yes. It is great that you registered for class last Monday and had your first class last Tuesday. (C) F: His courses are great. You must learnt a lot of Civil Engineering in your first class last Friday. (D) F: I am afraid I did not quite catch what you were saying. Please repeat it.
Example Output: C

Example Input: F: Excuse me sir, you can't park here. ,M: Why not? I'm not blocking the driveway? ,F: I know, but this is a no parking zone after 4:00 o'clock. You will get a ticket if the police see your car here.
(A) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (B) M: You mean I can't park here before 4:00 o'clock. But it is 5:00 now. So, I can park here. (C) M: Oh no, I am blocking the driveway. (D) M: Oh, you mean only the police can park there. But, there is no problem if the police see my car here.
Example Output:
A