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: What's the story about your new movie? ,M: It's about a police man. And I play the part. He has to catch the killer. The movie has some frightening scenes. But I hope the audience won't be too frightened to go to the movie theaters.
(A) F: So you are the one who plays the police man in the movie. (B) F: You have played a good police man in the TV show. (C) F: I am afraid I did not quite catch what you were saying. Please repeat it. (D) F: Playing a thief in the TV show must be hard for you.

Ex Output:
A


Ex Input:
F: The food looks really delicious. ,M: Sure it is, the wedding ceremony is wonderful, too. ,F: The bride looks so happy today. Are you a friend of Catherine's? ,M: Yes, we were in the same class at college. How about you? ,F: I'm a close friend of David's. How handsome he is in wedding clothes today. Well, may I have your name please? ,M: Jackson. I'm working in Chengdu, but I worked in Wuhan a year ago, and you? ,F: My name is Janet. I'm living in Mianyang. Ah, life in Chengdu, is it exciting?
(A) M: I've been working in Wuhan all the time. (B) M: Before working in Chengdu, I lived and worked in Mianyang. (C) M: I’m sorry, I don’t understand. Could you say it again? (D) M: I've just moved in Chengdu this year.

Ex Output:
D


Ex Input:
F: Are you enjoying the book I lent you? ,M: It's well written I'm sure, but it's not my cup of tea.
(A) F: What do you think of the content? Why is it not worth reading at all? (B) F: Why don't you like it? Why do you think the content of my book is bad? (C) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (D) F: Thank you for your excellent comments. I'm very happy that you like my book.

Ex Output:

C