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: Good evening, sir is there anything wrong? ,M: I'm afraid there is, and the service here has been terrible. We had to wait 40 minutes for the soup and then it was stone cold.
(A) F: Sorry. I will serve the soup for you right away. (B) F: I will take a look for you to see why the play hasn't started in the theater. (C) F: Excuse me, could you repeat the question? (D) F: I don't know why the bus hasn't come yet.

Ex Output:
A


Ex Input:
M: What will you do after graduation, Rose? ,F: I'd like to be a computer programmer. ,M: A computer programmer. Why? ,F: I want to make more money. I see my parents working in the restaurant every day but they don't earn much. ,M: Ah, I see, but are you good at operating computers? ,F: Yes, I got the first place in the computer competition last week. ,M: That job isn't easy I think.
(A) F: I’m sorry, I don’t understand. Could you say it again? (B) F: I guess so. I'd like to be a computer programmer now because I want to earn more money. (C) F: I guess so. I want to be a computer programmer now because I want to get the first place in the competition and I just failed last week. (D) F: I guess so. I'd like to be a computer programmer now because my parents are both in this field, and I want to earn more money.

Ex Output:
B


Ex Input:
M: I need to book a flight online. Can you help me? ,F: Sure. I use a website called Kayak.com. That compares the prices of many different airlines. They also have a cool quality where you can look at flights a few days before and a few days after your scheduled dates to find the best price.
(A) M: Thank you. I will compare different airlines at this travel agency. (B) M: I am afraid I did not quite catch what you were saying. Please repeat it. (C) M: I am glad that you think it is useful to look at flights at flexible dates. (D) M: Sure. The travel agency will choose nonstop flights for me.

Ex Output:

C