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: What's your favorite subject, Lily? ,F: I used to like math, but now I feel it's so difficult for me. And physics, too. I fall in love with English.
(A) M: So English is your favorite subject, right? (B) M: Why didn't you like English now? (C) M: I'm sorry, I didn't understand. Could you repeat a little louder, please? (D) M: So Math is your favorite subject, right?
Example Output: A

Example Input: F: Hello, Ben. You're getting ready for tomorrow's lessons, aren't you? ,M: Yes, but I'm a little bit nervous, because I have no idea how to get along with my classmates. ,F: I understand how you're feeling. Just take it easy. You'll make a lot of new friends very soon. ,M: Thank you. I am sure that I will. By the way, what time will the first lesson begin? ,F: At 8:00 o'clock, but before that we have 10 minutes to hand in homework and then 20 minutes for morning reading. ,M: So, we must get to school before 7:30, right? ,F: Right.
(A) M: Since the first lesson begins at 8:30, we really need to arrive at school before 7:20. (B) M: Well, just remember we can't be late for the first lesson begins at 7:50, so we must arrive at school before 7:30. (C) M: Alright, just get up on time, so we could arrive scholl before 7:30. (D) M: I didn't hear you. Please could you tell me again?
Example Output: C

Example Input: F: How was your trip, Dan? I'd love to go round the world. ,M: It was great. First we went to London but only for a few days as it rained all the time. Both of us got really wet. ,F: You went to Paris next, didn't you? ,M: Well, Paris wasn't at all, sunny, but it was better than London, a bit cloudy. ,F: Did you go up the Eiffel Tower? ,M: Yes. We both had a great time. ,F: Where did you go after Paris? ,M: To Sydney. We didn't get to the famous Bondi Beach as there were a lot of thunderstorms. We did some shopping there.
(A) F: I'm sorry, I didn't understand. Could you repeat a little louder, please? (B) F: Yeah, shopping in Tokyo was a good choice. (C) F: Yeah, shopping in Sydney was a good choice. (D) F: Yeah, playing on the beach was a good choice in Sydney.
Example Output:
C