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: Sir, I love these shoes. Can you give me a better price? ,M: But these are hottest sellers marked at the going price. ,F: Just go down dozens of dollars. Say 150 OK? ,M: I'm sorry. That's the best offer in this whole night market. You can go around and check for yourself. ,F: Yeah, I might just do so.
(A) M: Go to another store and compare the price, I'm sure you will come back. (B) M: You need to pay at the full price, $150. (C) M: I'll help you wrap the shoes. You can go pay the $150 at the cashier over there. (D) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that?

Ex Output:
A

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:
M: I need to book a flight online. Can you help me? ,F: Sure. I use a website called Kayak.com. That compares the prices of many different airlines. They also have a cool quality where you can look at flights a few days before and a few days after your scheduled dates to find the best price. ,M: Oh, that quality is very useful. But this is for my aunt and uncle, and their dates are fixed. They're coming out here for my sisters wedding. But they have to fly out the day before and leave the day after. ,F: I see. Where are they coming from? ,M: New York City. Oh, it's not a very long flight. Do you think they care more about prize or convenience? ,F: They definitely want a non-stop flight. They had a bad experience changing planes in Philadelphia once. So they only fly non-stop now. ,M: Got it. So 2 adults, flying nonstop from New York to Chicago, leaving May twenty eighth and returning May thirtieth.
(A) F: OK. I hope your parents can come to Philadelphia soon. (B) F: That is right. They will come to Chicago soon. It is so exciting. (C) F: I am really sorry, I did not catch that. Would you slow down, please? (D) F: Yes. Since we are in New York, we should send your parents to airport.

Ex Output:
B