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:
M: I'd like 2 tickets for tonight's show, how much is a ticket? ,F: $8.50 and there is also a service charge of $1 per ticket.
(A) M: So I need to pay $19 in total. (B) M: I need to pay $19 for service charge. (C) M: I'm sorry, I didn't understand. Could you repeat a little louder, please? (D) M: So I need to pay $17 for one ticket.

Ex Output:
A

Ex Input:
M: Mary, I heard that Sam is forming his own band. What's the name of the band? ,F: Stay Away from the World. It will be a great success. Sam is very good at playing the guitar.
(A) M: Really? You mean Sam is not very good at playing the guitar and the name of Sam's band is Keep Away From The World. (B) M: You mean Sam is very good at playing the piano, and the name of Sam's band is Stay Away From The World? (C) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) M: So, it will not be a great success and the name of Sam's band is Stay Away From The Words.

Ex Output:
C

Ex Input:
F: Is that you, Tom? Long time no see. What have you been doing all these years? ,M: Hi Lucy. I haven't seen you in a million years. I actually worked abroad for a few months and I've just returned from Canada. How are things with you? ,F: Everything is fine except that we have been missing you. ,M: We really need to get together sometime.
(A) F: How many years have you worked abroad? (B) F: Definitely! Let's make an appointment. (C) F: I'm sorry, I don't understand. Could you say it again? (D) F: Definitely! Let's make an appointment after I return from Canada.

Ex Output:
B