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: Hi, Mary, how are you doing? ,F: Fine. What happened to you yesterday? I didn't see you in class. ,M: Oh, I overslept as usual, what went on anyway? ,F: Mister Smith wants to see you in his office.
(A) M: I know, mom. (B) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) M: Don't forget we have a meeting about our project. (D) M: Did you help me hand in the homework?
Example Output: D

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: M: Is there a city where it's always warm? ,F: Yes, there are many cities where it's almost always warm. San Diego for example.
(A) M: Wow. It seems that Seattle is the only city that is almost always warm. (B) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (C) M: There is only one city that is always warm. That is San Diego. (D) M: Great. The weather in San Diego is almost always warm. It is so comfortable.
Example Output:
D