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.

Ex 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.

Ex Output:
B


Ex Input:
F: I heard you went to Las Vegas. What did you do? ,M: Well, we went shopping a lot. We went and visited the Hoover Dam. ,F: That's a lot of water. Did you go swimming? ,M: No, it's not warm enough for that.
(A) F: Why didn't you go shopping in Las Vegas? (B) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (C) F: You failed to swim in Hoover Dam in Las Vegas but you swam in somewhere else there, right? (D) F: Why didn't you visit the Hoover Dam in Las Vegas?

Ex Output:
B


Ex Input:
M: What did you think of Dana's speech today? ,F: Well, she must have spent a lot of time preparing it. I can't believe I could sit for that long without feeling bored.
(A) M: For your words, I can tell that her speech was boring. (B) M: Yeah, Diana is always a well-prepared person. (C) M: You say her speech is important. What did she say? (D) M: I am afraid I did not quite catch what you were saying. Please repeat it.

Ex Output:

B