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:
F: How may I help you? ,M: I need to buy some clothes for my daughter. I don't know what size to get. Can you help me? ,F: Certainly. How old is she? How tall is she? ,M: She is 9 years old and 4 feet tall. ,F: We have a great selection of clothes for young girls. Pants start at $10 and shirts start at $7.
(A) M: Really? You have a great selection of clothes for young boys and the cheapest shirt is just $10? (B) M: Excuse me, could you repeat the question? (C) M: So, as you mean pants start at $15 and shirts start at $7, the cheapest shirt is just $7? (D) M: Really? The cheapest shirt is just $3? Oh, I need to buy some clothes for my wife.

Ex Output:
B

Ex Input:
M: Can I help you Madam? ,F: Yes, thank you. I seem to have lost my room key. ,M: Take it easy. You can go to the front desk to get the spare one.
(A) F: Thank you. I'll go to the front desk and get the spare key right now. (B) F: I am afraid I did not quite catch what you were saying. Please repeat it. (C) F: Okay, I won't leave the office until you give me the spare car keys. (D) F: Thank you so much for helping me check in.

Ex Output:
A

Ex Input:
F: Here we go. Now, Terry, you were saying that you went from Vancouver to San Diego. How many days did that take? ,M: Um, the total trip took 42 days but that included one day on the bus up and then one day on the bus back. ,F: That is so cool, so first you have your bike in your hometown and you put your bike on the bus and you took the bus to Vancouver. ,M: Right. Yeah, you had to put your bike in a bicycle box. ,F: You are carrying everything you have with you so you need to take care of your bicycle. ,M: Yes, I can stop and bicycle shops along the way but I also need to maintain my bicycle by myself if I can't find anyone to help. ,F: OK. So when you are taking a trip what tools do you need to take with you to take care of your bicycle? ,M: Oh, just some basic tools and 2 or 3 tires.
(A) F: Oh, I see, so you didn't take many tools in your trip, right? (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: So you only took 2 tires, that's not so much tools. (D) F: Alright, so your trip from China to Japan cost $500, that's great.

Ex Output:
A