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:
F: Hi, Tim. I was wondering if you'd like to drive me to the station tomorrow morning? ,M: I would be happy to drive you there. When do you need to go? ,F: I should get to the station an hour in advance. So I need to leave my house at 7:30.
(A) M: Alright, I'll drive to your home to pick you up at 7:30, I will come on time. (B) M: I didn’t hear you. Please could you tell me again? (C) M: Okay, 7:30 sounds reasonable, then we can go to the school at 8:00 together. (D) M: Alright, I'll come to your home at 8:30 and drive you to the airport.

Ex Output:
A


Ex Input:
F: The children have been playing in the mountains for a long time. Why haven't they come back? I am really worried about them. ,M: Look at the sky. Black clouds are gathering and strong winds are blowing. It seems a heavy rain will fall soon. ,F: They haven't brought anything to protect themselves. They will be caught in the rain I think. ,M: Don't be worried too much about them. Anyhow, they're old enough now. They ought to be able to take care of themselves. ,F: I'm afraid they will catch a cold if they are caught in the rain. You see it's a little cold now.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: Don't worry, they will not be caught in the heavy rain. It is sunny outside. (C) M: You can ask them if they pass the exams directly, they are in their bedrooms. (D) M: Don't worry about the children, they won't be caught in the heavy rain.

Ex Output:
D


Ex Input:
M: Janet, it's Oscar. Did I wake you up? ,F: No, but I'm going to get up then. ,M: Sorry, listen. I'll arrive in Florida on the fifteenth Orlando Airport. Do you want to meet me then? ,F: Sure, welcome to Florida, and how are you going to Disney World? ,M: I will take a taxi at the airport, how about meeting there? ,F: Why don't we meet at the Kennedy Space Center. It's not that far from my company.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: When you arrive at the Orland Airport on the 15th, Lucy, I'll pick you up. (C) M: On the 12th, I'll take the airport bus to the Space Center to see you. (D) M: No problem. I'll take a taxi to the Kennedy Space Center to meet you.

Ex Output:

D