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'll be at a lunch meeting for the next hour and a half. Will you please tell anyone who calls that I will call them back later this afternoon? And if anyone comes to the office, it just have them wait until I come back. ,F: Yes, Mr. Roberts. What if they are there waiting for a long time? Should I offer them anything?
(A) M: No, please have a lunch break. I'll be at a lunch meeting for three hours. (B) M: I didn't hear you. Please could you tell me again? (C) M: No, please have a lunch break. I'll go to another company. (D) M: No, please have a lunch break. I'll go to a video store.

Ex Output:
B

Ex Input:
F: Where are you going to plant the tree, by the front door? ,M: No, that would be silly. I'll put it next to the garage. ,F: Wouldn't it be better in the backyard? ,M: Well, you're quite right. Let's go now.
(A) F: Are you going to plant the flower by the front door? (B) F: Cool. Let's plant the tree in the back yard. (C) F: I am afraid I did not quite catch what you were saying. Please repeat it. (D) F: Do you still want to plant it next to the garage? It wouldn't be better in the backyard.

Ex Output:
B

Ex Input:
F: This book originally cost $30, but I got a 20% discount. Unfortunately, I've only got $15. ,M: I've got $13.00, so I'll lend you the rest.
(A) F: I am afraid I did not quite catch what you were saying. Please repeat it. (B) F: Thank! The book is 50% off, I just have $15. (C) F: Thanks! Then I pay $24 for the CD. (D) F: Thanks! Can you lend me $9 so I can pay $24 in total.

Ex Output:
D