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: M: Good evening. Do you have any rooms available at the moment? ,F: Yes, we do. How many nights do you want to stay? ,M: 4. If it's possible. ,F: OK, let me see. I'm sorry, sir. I'm afraid we can only give you a room for 2 nights. It's a very busy period right now. We're almost fully booked these days. ,M: Alright. I'll just stay for tonight then. It's too late to go to other hotels now. I'll search for another one tomorrow.
(A) F: Thanks for your understanding, I'll prepare a room for you to stay one night. (B) F: Sir, we don't have a room for 2 nights, you can only stay here for one night. (C) F: Are you sure you'll stay for only two nights? We still have many vacancies. (D) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly?

Output: A


Input: Consider Input: F: How is there only one more week of summer vacation before we have school again? I haven't even been to the beach yet. Can we go tomorrow? ,M: I'd love to but I promise to Sadie I'd go to the movies with her.
(A) F: OK, Let's meet at the bus stop at eight tomorrow and go to school together. (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: You can shopping in the cinema and then see the movie in the restaurant. (D) F: Which movie are you going to watch?

Output: D


Input: Consider Input: F: Why did you decide to publicize climate change in this way? ,M: Well, I was really upset about some countries failure to sign up pollution control agreements. It felt like the science wasn't getting understood by the politicians, so I decided to look into what I personally could do, that led me to dream up a cartoon character called Mr Carbon. We all know somebody like him, he's climate ignorant and makes no effort to save energy. Of course, factories are the obvious bad character in the real world, but I couldn't do much about them. ,F: So, are we going to see him in scenes like we get in disaster movies? ,M: That's pretty unlikely, it's hard to make a box office success. But he certainly gives cause for concern. People are becoming more aware of the climate change. ,F: So you came up with the idea of another cartoon character, Mrs Green. ,M: Yes, now, she pays attention to little things, uses low energy light bulbs doesn't leave the TV on standby. Goes in for recycling. As well as making a contribution to the climate, she'll save $150,000 over her lifetime.
(A) F: Well, you think Mrs. Green pays attention to little things and she is an energy saver, right? (B) F: Why do you think Mrs. Green makes no contribution to the climate and she is climate-ignorant? (C) F: Okay.  Mrs. Green uses high energy light bulbs but you still think she is an energy saver. (D) F: Excuse me, could you repeat the question?


Output: A