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: Today I am interviewing 16-year-old Mike about his feelings on how people can help save the environment. So, Mike. How can we save the environment? ,M: By saving water. ,F: Well, how can we do that? ,M: By not using too much water when we wash dishes, take a bath and when we do other things, like watering the plants outside.
(A) F: I'm sorry, I didn't understand. Could you repeat a little louder, please? (B) F: Using less water is a good way to save water. You are only 15 years old and you know so much. (C) F: Yes. We can save water by growing more plants. But you said that saving water cannot save the environment. (D) F: That is true. Since you are 15 years old, how do you know that you can save water by recycling rubbish?

Ex Output:
B

Ex Input:
M: I need to go to the bank. ,F: But they're all close today? ,M: Closed? Are you kidding? What is it? Some kind of holiday today?
(A) F: Hey, calm down. Just joking, The post office is right behind you. (B) F: I am afraid I did not quite catch what you were saying. Please repeat it. (C) F: Hey, calm down. Just joking, there's no bank in the town. (D) F: Hey, calm down. Just joking, which bank do you want to go?

Ex Output:
D

Ex Input:
F: What kind of music do you like listening to? ,M: I like music that has a fast beat and it's lively, like dance music which is sometimes too loud, though. You prefer classical music, don't you? ,F: Yes, I do. I find it very relaxing. I often listen to Mozart or bach in the evening after a hard day at work. ,M: I must admit that I like several pieces of classical music. ,F: Classical music is supposed to be good for your brain, research suggests that it makes your brain more active, students who listen to classical music while studying perform better. ,M: Really? Perhaps I should listen to classical music often. I heard that listening to classical music is helpful in reducing stress. ,F: Yes, that's why I listen to it in the evenings. I usually play it as background music while I'm cooking or doing other housework. But in the early morning when I get up, I prefer to listen to folk music which is more traditional.
(A) M: I'm sorry, I don't understand. Could you say it again? (B) M: It' s so nice to listen to folk music which is less traditional in the early morning. (C) M: That sounds great! In early morning, to listen to folk music. What an easy life! (D) M: That' s good to listen to folk music in the evenings. Thanks for your advice, uncle Joe!

Ex Output:
C