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 help you? ,F: Yes, I'm looking for how to manage your company. It was published this year. It should be very popular. ,M: Yes, it's in high demand. You have to wait for another 2 days.
(A) F: Your company has a good business. (B) F: The next class is English. (C) F: I didn’t hear you. Please could you tell me again? (D) F: Oh my god. I have to wait for another 4 days.
Example Output: C

Example Input: F: I notice an article in the newspaper about the problem of rapid growth of cities in America. I was wondering do you Americans carry out a birth control policy? Can Americans have as many children as they want? ,M: Yes, sir. We can have as many as we want, but most people decide to have only one or 2, and some people decide not to have any. ,F: Why do they decide not to have any? In the old days, we Chinese always wanted to have as many as possible. Some still do now.
(A) M: I am really sorry, I did not catch that. Would you slow down, please? (B) M: Well, most Americans also decide to have as many children as they can. (C) M: I have no idea. Most Americans decide not to have any children. (D) M: Well, with the birth control policy, most Americans only have one or two children.
Example Output: A

Example Input: M: So Alice, when do you begin? ,F: I start on the twenty-first. I'm hoping to hurry to the coast before I'm too busy. ,M: I don't blame you, you're going to be working long hours, and should get a little rest before it all starts. ,F: We don't actually start working on the first day, but there's going to be some hard training. All new volunteers are required to complete 10 days of training, so I do want to get a little play time before that.
(A) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) M: So, you will work long hours on the 21st but there's going to be some easy training? (C) M: So, you will receive some training on the 21st and you do want to get a little play time after that? (D) M: So, you will receive some training on the 21st and you hope to hurry to the school before you are too busy?
Example Output:
D