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.

Input: Consider Input: F: Hello, this is Katrina Travel Agency. May I help you? ,M: Yes, this is Edgar. I'll have a holiday. And I'm thinking about traveling abroad with my parents. Can you give me some advice? ,F: Of course. May I ask how long you will plan to travel. ,M: About a week.
(A) F: It's enough for your friends to travel abroad for ten days. (B) F: Seven days is good choice. Your parents must have a happy time. (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: You are so happy that you can travel alone for five days.

Output: B


Input: Consider Input: F: Tom, the cases are too heavy. I think we should take a taxi to the station. ,M: Not at this hour. Look at the traffic. It's moving very slowly. We can get there just as quickly on foot. ,F: Well, I can't carry this case any farther. ,M: Alright, let me take it then. The cases aren't that heavy. ,F: Don't be silly. They're heavier than you thought, especially when you carry them for some time. ,M: Hmm, perhaps it isn't a bad idea. ,F: What is not a bad idea? What do you mean? ,M: Taxi, taxi!
(A) F: As you refused taxi and the case isn't heavy, let's walk. (B) F: Though the case isn't heavy at all, it's good to take taxi. (C) F: Thanks god, you finally agree to call a taxi. Let's wait here. (D) F: I’m sorry, I don’t understand. Could you say it again?

Output: C


Input: Consider Input: M: Oh, look at the sky, Marie. It's starting to get cloudy. ,F: I thought it was going to be a fine day today. I hope it doesn't rain. ,M: We can't have our picnic without some good sunshine for all the eating and games and entertainment. ,F: Yeah, but not too much sunshine, Allen. Don't you remember last year? It was so hot. ,M: And no one wanted to participate in any of the planned activities. All we wanted was cold drinks. I remember that the temperature just climbed higher and higher that day.
(A) F: Yeah, you were so satisfied with the picnic and played games with everybody. (B) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) F: Well, the weather was sunny and nice last year and everyone enjoyed playing games. (D) F: Yeah, they didn't want to play because it was so hot.


Output: D