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: We can go to see the movie, saving the planet at the rock. What time does it start? ,F: 8:00 o'clock. ,M: So we can be back about 10:30, right? ,F: No, it doesn't end until 11. ,M: I can't sit in the cinema so long.
(A) F: Really? You can sit in the cinema so long? Oh, the film Saving the Planet last just lasts two hours. (B) F: I’m sorry, I don’t understand. Could you say it again? (C) F: Really? You can't sit in the cinema so long? Oh, the film Saving the Planet last just lasts three hours. (D) F: Well, actually we can be back about 10:30 and the film Saving the Planet last just lasts three hours.

Ex Output:
C


Ex Input:
F: How may I help you? ,M: I need to buy some clothes for my daughter. I don't know what size to get. Can you help me? ,F: Certainly. How old is she? How tall is she? ,M: She is 9 years old and 4 feet tall. ,F: We have a great selection of clothes for young girls. Pants start at $10 and shirts start at $7.
(A) M: Really? You have a great selection of clothes for young boys and the cheapest shirt is just $10? (B) M: Excuse me, could you repeat the question? (C) M: So, as you mean pants start at $15 and shirts start at $7, the cheapest shirt is just $7? (D) M: Really? The cheapest shirt is just $3? Oh, I need to buy some clothes for my wife.

Ex Output:
B


Ex Input:
F: Nice to meet you, Peter. ,M: Welcome to my home. Come in, please.
(A) F: Welcome to my home, Peter. Come on in! (B) F: I’m sorry, I don’t understand. Could you say it again? (C) F: Wow. Your house is so nice, Peter. (D) F: Thanks for inviting us to your house, Jack.

Ex Output:

C