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: John, when was Tom born? ,M: He was born on May seventh 1982. He is 4 years older than I am, but our birthdays are on the same day.
(A) F: Oh, you mean you were born in 1982 and you are 4 years older than Tom? (B) F: I can't believe that you were born in 1986 and you are 4 years older than Tom. (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: Since you are 4 years older than Tom, so you must have been born in 1978.
Example Output: C

Example Input: F: Mike, come here, please. ,M: I'm coming, mom. It looks like you're very busy. Is someone coming this afternoon? ,F: Yes, some of my friends are coming over this afternoon. There's still so much to get ready. ,M: Is there anything I can do to help you? ,F: Sure, I still need to get some drinks. I'd like to have coffee, water, fruit juice and some cola. ,M: I'll go and buy some fruit juice and cola and then I'll make some coffee. ,F: Do you know how to make coffee? ,M: Yes, aunt Joan taught Mary and me when we visited her last week. So I can make very nice coffee now. ,F: That's great, Mike. Don't forget to buy some sugar ,M: OK. By the way, when will your friends come? It's already 5:00 o'clock now. ,F: They'll arrive in an hour.
(A) M: Great, so they will arrive at 5:00 and we still have plenty of time to prepare. (B) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (C) M: I hope we can get everything ready at 6:00 to welcome your friends then. (D) M: Relax, we still have 2 more hours to prepare as your friends will come at 7:00.
Example Output: C

Example Input: M: Hey, Alice, I have heard that you have a big family. ,F: That's right. I have six brothers and five sisters. ,M: Wow. That's pretty big. What do your parents do? ,F: Well, my father drives a taxi, my mother runs a small family store.
(A) M: I don' know your father is a food seller and your mother is a taxi driver. (B) M: You mean your father runs a store and your mother is a taxi driver? (C) M: I am really sorry, I did not catch that. Would you slow down, please? (D) M: That must be hard to raise your big family by making money as a taxi driver.
Example Output:
D