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:
F: What do you think of your new life in college? ,M: Well, it is very nice. There are many clubs in the college, such as dancing clubs, painting clubs and football clubs. ,F: Have you joined any clubs? ,M: I have joined a chess club. You know, I am very fond of playing chess. ,F: Now, many college students do a part time job to earn some pocket money. What do you think of that? ,M: Well, it can really help us earn some money and gain some experience, but I am afraid it would take up too much study time.
(A) F: I think so. Part-time jobs only take up little study time, but the return is huge. (B) F: I agree. Part-time jobs are so time-consuming that nobody now ever thinks of that. (C) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) F: You think part-time jobs can help one to study, while they take up little study time.

Ex Output:
C


Ex Input:
F: Dad, I want to travel around South Asia this summer holiday. Do you agree? ,M: I am not sure, Lucy. You are only 18. ,F: But I won't be traveling by myself. ,M: Who would like to go with you? ,F: Mary and Susan.
(A) M: Oh, Mary and Susan will go with you to South Asia. I think that's fine. (B) M: Wow, you're going to Africa with your husband this summer holiday. (C) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (D) M: As long as Mary, Susan and her husband will travel with you, it's OK.

Ex Output:

A