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: Ella, what languages do you speak? ,F: As you know Korean is my first language. I also speak English and Chinese. How about you? What languages do you speak? ,M: English, German and French. While I was studying in Europe, I used French in German all the time. Now, my French is not so good but I do keep my German up.
(A) F: My mother tongue is Korean, but I can't speak any other language. (B) F: I’m sorry, I don’t understand. Could you say it again? (C) F: We can both speak English. English is my mother tongue. (D) F: My native language is Chinese, but I can't speak English.

Ex Output:
A


Ex Input:
F: Julia and I are driving downtown this afternoon. Want to come, Tom? ,M: Thanks, Kathy, but I've got to study. I'm way behind in maths.
(A) F: In that case, Judy and I are going to the bus station to catch bus. (B) F: Oh, ok, since you are going to the math class, we can drive you there. (C) F: Excuse me, could you repeat the question? (D) F: Oh, ok, John, then we'll leave you to study English.

Ex Output:
C


Ex Input:
F: Shall we go for lunch now? ,M: Yes, but I don't want to eat another sandwich. ,F: Me neither. I feel like eating noodles. ,M: OK, I was thinking of pizza, though.
(A) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (B) F: Then let's go and get some noodles for lunch. (C) F: Sandwiches would definitely be fine. (D) F: Sure, pizza will do.

Ex Output:

B