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: Is that you, Tom? Long time no see. What have you been doing all these years? ,M: Hi Lucy. I haven't seen you in a million years. I actually worked abroad for a few months and I've just returned from Canada. How are things with you? ,F: Everything is fine except that we have been missing you. ,M: We really need to get together sometime.
(A) F: How many years have you worked abroad? (B) F: Definitely! Let's make an appointment. (C) F: I'm sorry, I don't understand. Could you say it again? (D) F: Definitely! Let's make an appointment after I return from Canada.

Ex Output:
B

Ex Input:
F: Nice to see you again, Mike. How was your trip to China? ,M: It was great. I flew to Beijing with my wife last month and I stayed there for 3 days. There were so many things to see and so many places of interest to visit in Beijing that we really couldn't decide whether to leave or stay. ,F: Have you visited other places in China? ,M: Yes, then we visited Shanghai and Nanjing, each city for 2 days. Finally we paid a visit to Guilin, where we spent 3 days. They were so beautiful that we were deeply impressed by these cities.
(A) F: Two days in Shanghai and Nanjing respectively didn't sound enough for me. (B) F: I'm sorry, I didn't understand. Could you repeat a little louder, please? (C) F: Three days in each city, including Nanjing and Shanghai? Sounds so great. (D) F: What did you do during the four days in Nanjing? I skipped the city last time.

Ex Output:
A

Ex Input:
F: Hi, Sam, can you help me this weekend? I need help moving a new sofa into my house. ,M: Hey, Jennifer, no problem. I'm free this weekend and my truck is great for moving stuff. Where did you get the sofa? ,F: My friend Jack is moving next week, but his new apartment is very small. So he is giving me his sofa. ,M: It's good that your place is large enough to fit the sofa. Where will you put it? ,F: I have space in the living room. My current sofa is a little old and dirty, so I'm just going to throw it away. ,M: Yeah, my sofa gets dirty easily as well. Hey, I know Jack from work. Where is he moving? ,F: He is actually just moving across the street. Even though he won't have much space, he will have a great view. ,M: And you get a new sofa? ,F: Yup, it will be nice to get rid of my old one. ,M: Maybe Jack needs to get rid of some other furniture when he moves. ,F: I guess you can find out next week.
(A) M: Well, actually I will get a new truck from Jack tomorrow when he moves out. (B) M: I am moving tomorrow because I found a place with a great view. (C) M: I'm sorry, I didn't catch that. Would you mind speaking more slowly? (D) M: Yeah. I do hope that Jack will give me some furniture when he moves out.

Ex Output:
D