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: Where are you going, Les? ,M: To the pet shop. I want to buy some cat food for Grace's birthday. She loves her cats and I'm sure she'd like to get some cat food. ,F: But it's Grace's birthday, not her cats'. She enjoys reading. Let's get her a book. ,M: OK. Let's go to the book shop then. ,F: I prefer shopping online. It's easier.
(A) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (B) M: Really? You don't prefer shopping online although you think it's easy? (C) M: Really? You think shopping online is easy? Can we buy books online as well? (D) M: OK. Let's get her a pen and we can buy it online as you think shopping online is interesting.
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: F: Congratulations on winning the speech contest, Peter! ,M: Thank you. ,F: Could you tell me some important factors in delivering a successful speech? ,M: Well, basically 4 points. Pronunciation, intonation, a well written essay and proper body language.
(A) F: I didn’t hear you. Please could you tell me again? (B) F: So, you failed the speech contest because you believe pronunciation and intonation are the important factors in delivering a successful speech? (C) F: Really? Basically 2 point? And proper body language is the important factor in delivering a successful speech? (D) F: So, all of the above are the important factors in delivering a successful speech, except the  pronunciation and intonation.
Example Output:
A