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: Your school bag is really cool. Where did you get it? ,M: My aunt sent it from Australia for Christmas.
(A) F: I see, your favorite holiday is Christmas, your uncle bought you a bag for Christmas, right? (B) F: Your aunt sent the school bag to you from Australia. It's so cool! (C) F: It's nice of your aunt to send you a bag from England. (D) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that?

Ex Output:
B


Ex Input:
M: I can't stand this heat. I can't get my attention to studying for the midterm exam. I guess I'll have to go to the library this afternoon. ,F: I don't blame you. This dormitory doesn't have air conditioning. I can't study, either. My roommate and I are thinking about moving out to the other dorm, or an apartment that has air conditioning. ,M: Oh, I thought about moving to. But if I want to live in an apartment, I have to pay a lot of money for electricity. Do you know an air conditioner is cheaper today than it was 10 years ago? On the other hand, electricity is a lot more expensive today. ,F: I didn't know that. How much do we have to pay for the electricity? 5 years ago, it was possible to run an air conditioner 24 hours a day for mere $20 a month. Today, the same air conditioner in the same house cost more than $40 a month.
(A) M: Excuse me, could you repeat the question? (B) M: That means $35 will cost to run an air conditioner 24 hours a day for 2 months 5 years ago. (C) M: Today, as five years ago, running an air conditioners 24 hours a day cost $20 for 2 months. (D) M: Electricity is cheaper today. 5 years ago, running an air conditioners 24 hours a day cost $40 for 2 months.

Ex Output:
A


Ex Input:
F: Hello, this is Easy Life real estate. May I help you? ,M: Hello. My name is Bob Brown. I'm hoping you can help me find a place to live in. ,F: OK. First, please tell me what you're looking for, a house or an apartment? ,M: An apartment. I can't afford a house. ,F: Alright. And how many bedrooms do you need, 1, 2 or 3? ,M: I don't want to share it with anybody. So one bedroom is enough for me. ,F: Right. And are you looking for the apartment with furniture or without? ,M: I'd like it to have furniture because I don't have any. Oh, I want it to be in the south of the city and near the subway station. ,F: OK. The last thing is how much you're able to pay?
(A) M: $300 a month. I just want it to be in the north of the city. (B) M: Excuse me, could you repeat the question? (C) M: $300 a month. I just want it to be near the bus stop. (D) M: $300 a month. I really want to have one bedroom with furniture.

Ex Output:

D