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.

Example Input: M: I really have to thank Phi for letting me use this office. ,F: Please don't mention Phi. He's off at a Zurich conference and I'm stuck here with a double patient load.
(A) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (B) M: You have more patients to meet. Hold on for several days and Phi will come back from Paris. (C) M: It seems that there are more patients waiting for you. I'll come later. (D) M: Thank you for sharing your office with me.
Example Output: C

Example 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?
Example Output: A

Example Input: F: I just received a beautiful Mother's Day gift from our son. ,M: What did he give you this year?
(A) F: I am really sorry, I did not catch that. Would you slow down, please? (B) F: Dear, it is a hat. It's from our son. (C) F: Brother, you can guess what this gift is. (D) F: Thank you for your nice gift, dear son.
Example Output:
B