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 can I do for you, sir? ,M: I'd like to buy a box of chocolates. ,F: OK. We have dark chocolates, milk chocolates, fruit chocolates and some chocolate with nuts in them. Which kind would you like? ,M: I prefer to buy fruit chocolates, please. My son likes them very much. ,F: All right. Anything else? ,M: Let me see. Oh yes, I want to buy some fruit. Do you have any strawberries? My daughter and my wife like them very much. ,F: Yes, they are over there. You can try one. They are very sweet. ,M: Let me see. Well, they don't look fresh enough. The pears look juicy. I'll take 3 kilos please. How much is the total? ,F: Just a moment, please. 55 yuan for the chocolates, and twenty one for the pairs, that will be 75 yuan in all, please.
(A) M: Thank you. I really like the pears, they are juicy. (B) M: Thank you. I really like the strawberries, they are juicy. (C) M: Thank you. I really like the pears, they must be sweet. (D) M: I am really sorry, I did not catch that. Would you slow down, please?

Ex Output:
A


Ex Input:
M: Sarah, have you had a chance to buy that new novel you wanted? ,F: Actually, I've already got it. I visited at least 5 bookstores yesterday and finally found a copy in our school library. ,M: Lucky you, I've been looking forward to reading it. ,F: It's in my study. I'll go and get it if you'd like to borrow it.
(A) M: I didn’t hear you. Please could you tell me again? (B) M: Oh, thank you very much, I never thought you could get the copy from our school library. (C) M: No, thanks, I have another copy besides the one you took from my home. (D) M: No,thanks, it's not in your study. Since you can find this book from the library, I believe I can too.

Ex Output:
B


Ex Input:
F: May I help you sir? ,M: Yes, I'd like to order a cheese burger and a small cake.
(A) F: Sure, honey. I will cook for you now. (B) F: Sure. I'll serve your drinks to your seat later. (C) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (D) F: Sure. I'll serve your food to your seat later.

Ex Output:

D