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.

Input: Consider Input: F: Good afternoon, sir. Can I help you? ,M: Yes, we need a room for the night. Have you got any rooms available? ,F: Yes. What do you like a single room or a double room? ,M: A double room. ,F: How many nights would you like to stay? ,M: We're only staying overnight. We'll check out tomorrow morning.How much is it? ,F: It's $68 per night.
(A) M: As I'll stay for two nights, it's $136 in total. (B) M: Then I need to pay $68 for the single room. (C) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) M: So, $204 a night for my single room. Alright.

Output: C


Input: Consider 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.

Output: A


Input: Consider Input: F: Hello, Tom. I haven't seen you for sometime. How are you doing? ,M: Oh, not too bad. I have been busy writing an article ,F: Really? Have you finished it? ,M: Yes, I finished it yesterday. ,F: Congratulations. Are you doing something this evening? ,M: No, nothing important. Why? ,F: Well, do you feel like going to relax yourself? Besides, I like music very much.
(A) M: I'd love to, but I have to keep working tonight. (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: It's too bad you can't go to the concert. You can relax tonight and continue writing your article tomorrow. (D) M: Sounds good. I can relax by going to the concert and listening to music.


Output: D