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:
M: Ma'am! You forgot your phone. ,F: Oh, thanks. I couldn't live without this little thing. ,M: I know what you mean. It is of great significance to you. So, did you enjoy your dinner?
(A) F: Oh, yes. It's strange. I never forget my phone anywhere. (B) F: Oh, yes, I want to thank you again. The phone is extremely important to me. (C) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (D) F: Oh, yes. I really enjoy the service with my phone.

Ex Output:
B


Ex Input:
F: Tomorrow is my birthday, I'd like you and Jane to come. ,M: Thank you and happy birthday. I'd like to go and celebrate, but that depends on when Jane can finish her homework.
(A) F: OK. You'll come to my birthday if you get back from work. (B) F: OK. You'll come to my birthday if Jane finishes her homework. (C) F: OK. You'll come to Tom's birthday if Jane finishes her homework. (D) F: I didn’t hear you. Please could you tell me again?

Ex Output:

B