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:
M: We'd like 2 rooms, a small room and a large room, both facing the garden. ,F: Very good sir, the small room is $20 a night, and the large room is $30 a night.
(A) M: So I have to pay $50 a night. (B) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) M: I only need a large room, so I need to pay $20 a night, right? (D) M: I only need a small room, but I need to pay $50 a night, right?

Ex Output:
A


Ex Input:
F: What are you going to do tonight? ,M: Oh, I'm going to stay at home and study. My final exam is coming up next week. ,F: Is it going to be difficult? ,M: It will be harder than the mid-term exam. I'm sure. ,F: Was the mid-term exam difficult? ,M: It was the most difficult exam that I'd ever had. ,F: Then maybe this one will be easier.
(A) M: You might be right. The midterm exam was quite easy and the final one may be the same. (B) M: I’m sorry, I don’t understand. Could you say it again? (C) M: I didn't review for my midterm, which was difficult, so I'll study hard for next month's final. (D) M: No really. The midterm was already the most tough exam for me. I worry about the final.

Ex Output:

D