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:
M: Hello, reservation desk. How can I help you? ,F: I'd like to book a room. ,M: And what kind of room would you like ma'am? And we got single rooms, double rooms, standard rooms, sweets and Delux sweets. ,F: What's the rate for a standard room? ,M: $79 a night. ,F: I'd like a standard room. ,M: What date would you check in ma'am? ,F: December twenty-third, please. ,M: How long do you plan to stay? ,F: Four days.
(A) M: So, you mean you plan to stay three days and you will check out on December 23rd? (B) M: I am afraid I did not quite catch what you were saying. Please repeat it. (C) M: So, you plan to stay 4 days and you will check out on December 27th? (D) M: Oh, I see. You would like a single room and will check out on  December 27th.

Ex Output:
C


Ex Input:
F: What kind of music do you like listening to? ,M: I like music that has a fast beat and it's lively, like dance music which is sometimes too loud, though. You prefer classical music, don't you? ,F: Yes, I do. I find it very relaxing. I often listen to Mozart or bach in the evening after a hard day at work. ,M: I must admit that I like several pieces of classical music. ,F: Classical music is supposed to be good for your brain, research suggests that it makes your brain more active, students who listen to classical music while studying perform better. ,M: Really? Perhaps I should listen to classical music often. I heard that listening to classical music is helpful in reducing stress. ,F: Yes, that's why I listen to it in the evenings. I usually play it as background music while I'm cooking or doing other housework. But in the early morning when I get up, I prefer to listen to folk music which is more traditional.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: It' s so nice to listen to folk music which is less traditional in the early morning. (C) M: That sounds great! In early morning, to listen to folk music. What an easy life! (D) M: That' s good to listen to folk music in the evenings. Thanks for your advice, uncle Joe!

Ex Output:
C


Ex Input:
M: Mary Westin, it's been 100 years. I haven't seen you since we were in high school. ,F: Randy Bedford, Oh my goodness. You look exactly the same. Even your hair is the same, curls everywhere. ,M: Well, you look a lot different. But I mean that in a good way. ,F: Well, I got tired of that blonde hair. So I decided to become a redhead. I also lost a lot of weight. I don't want to look like I did in high school ever again.
(A) M: So, as you had red hair in high school, you decided to become a yellowhead? (B) M: Yeah, you lost a lot of weight and in high school, you had blond hair. (C) M: I didn’t hear you. Please could you tell me again? (D) M: Well, you don't look a lot different. In high school you also had curly hair.

Ex Output:

B