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: Can I talk to you for a minute, Professor Smith? ,F: Sure, David. What can I do for you? ,M: I didn't get to copy down all the terms you mentioned in today's lecture and I know they were important.
(A) F: I am really sorry, I did not catch that. Would you slow down, please? (B) F: Thank you for trusting me and ask me for help with today's lecture. What kind of problem do you have? (C) F: Robin, I am sorry to know that you have missed all the classes last week, but it will not influence your final grade. (D) F: It is good that you want to learn how to take notes. Since there is no lecture today, let's review last week's class.
Example Output: B

Example Input: M: I'll pick you up at 10:45 tomorrow morning. ,F: How long will the journey last? It's a 3 and a half hour drive. And we should give ourselves 40 minutes to have lunch and another 10 to wait for the ferry.
(A) M: Your flight will take off at 10:45. (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: I want to travel to Chicago by train. (D) M: Don't worry, we have enough time to go on board.
Example Output: D

Example Input: M: How's the new job going? ,F: Well, I'm getting used to lots of new things. But I wish the supervisor would give me some feedback.
(A) M: So you mean you used to work at a newspaper but still don't find a new job, right? (B) M: Why do you wish you had a different kind of job? You are not getting used to any new things. (C) M: I'm sorry, I didn't understand. Could you repeat a little louder, please? (D) M: So you mean you'd like your supervisor's opinion of your work, don't you?
Example Output:
D