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: Adam, I heard you want to get in shape. Why not join the club I am in? ,M: Is it far from our neighborhood? ,F: No, it's just 10 minutes away from here by bike. ,M: What do you do there? ,F: Well, I often start out running for about half an hour and then I get in the swimming pool for an hour. ,M: I really like swimming. It's a good way to lose weight, isn't it? ,F: Oh, it certainly is. I was 135 pounds when I joined the club. Now I weigh just 120 pounds, and I'm sure I'll manage to lose another 10 pounds by the end of July. ,M: That's amazing. Perhaps I'll go and have a look at your club tonight.
(A) F: Are you going to lose weight by cycling? The club is only 10 minutes' walk from here. (B) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) F: Although the club is 30 minutes away from here by bike, why are you going to lose weight by running? (D) F: Great, then you're probably going to lose weight by swimming.

Ex Output:
D


Ex Input:
F: Where are you going, Les? ,M: To the pet shop. I want to buy some cat food for Grace's birthday. She loves her cats and I'm sure she'd like to get some cat food. ,F: But it's Grace's birthday, not her cats'. She enjoys reading. Let's get her a book. ,M: OK. Let's go to the book shop then. ,F: I prefer shopping online. It's easier.
(A) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (B) M: Really? You don't prefer shopping online although you think it's easy? (C) M: Really? You think shopping online is easy? Can we buy books online as well? (D) M: OK. Let's get her a pen and we can buy it online as you think shopping online is interesting.

Ex Output:
C


Ex Input:
F: It's a terrible day, isn't it? ,M: Yes, it is. This is why our flight was delayed for 2 hours. My parents should be worried about me. They are waiting for me at London airport. ,F: Where did you come from? ,M: Beijing. I was there for a 2 weeks' conference on space technology. ,F: How interesting! I was there for tour. You see, I usually have a tour twice or 3 times a year. ,M: Really? Which places did you visit in China? ,F: Apart from Beijing, we went to Nanjing, Shanghai, Xi'an, Hangzhou, and Guangzhou. ,M: Did you enjoy it? ,F: Very much. It was one of the most exciting tours I've ever made. Was this your first trip to China? ,M: Oh, no. I go almost every year. Unfortunately, it's always on space related business. I haven't had time to visit tour sites.
(A) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) F: Really? You haven't had time to visit tour sites? Oh, let's talk more about the tour sites on this plane to England. (C) F: Really? You have had much time to visit tour sites? Oh, let's talk more about the tour sites on this plane to England. (D) F: Really? You mean you seldom go to China every year? OK, I see. Let's talk more about China at this Beijing airport.

Ex Output:

B