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: Welcome to the Hilton. ,F: I'd like to check in.
(A) M: No problem. Please show me your passport and flight ticket. Do remember not to bring anything which is forbidden by the customs. (B) M: No problem. There is your key to the hotel room. (C) M: No problem. I will book a table for you so that you can have your dinner at our restaurant. (D) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that?

Ex Output:
B


Ex Input:
M: Let's meet at 20 to 5. ,F: Well, could we make it 20 past 5? ,M: That's a bit late for me. I could manage 10 past. ,F: OK, see you then.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: That would be great. Make it 5:10. (C) M: Since you want 10 past 5, let's meet then. (D) M: Sure, 5:40 is ok.

Ex Output:
B


Ex Input:
F: Here's your cup of coffee, Bob. ,M: Thanks. But what took you so long, Catherine? ,F: Sorry, Bob. I bumped into somebody I knew in the cafe and stopped for a chat. ,M: OK, well. Catherine, did you know that coffee houses were originally a meeting place for lively debates and intellectual discussions? ,F: Really? I didn't know that, Bob. So how long ago was this debating society formed? ,M: The first coffee house was set up in Oxford in one thousand six hundred and fifty, but they quickly became popular and soon they were all over London too. You paid a penny to get in, and this included access to newspapers and stimulating conversation.
(A) F: Since newspapers were given out to customers, there were must many customers. (B) F: I didn’t hear you. Please could you tell me again? (C) F: Oh, I never thought that an entrance fee was charged for getting in it. (D) F: Wow, it's cool that the earlier coffee house was the meeting place for debating clubs for free.

Ex Output:

C