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: M: Lisa, why do you keep a night light on in your room? ,F: I thought you knew that I'm scared of the dark.
(A) M: If you're not afraid of the dark, why keep all the lights on at night? (B) M: I didn’t hear you. Please could you tell me again? (C) M: Why keep a night light in your room at night when you are not afraid of the dark? (D) M: Now I know why you turn on a night light in your room at night.

Output: D


Input: Consider Input: M: I would like to make a hotel reservation. ,F: What day will you arrive? ,M: I will arrive on May fourteenth. ,F: How long will you stay? ,M: I need the room for 3 nights.
(A) F: So, you are gonna leave Shanghai on May 14th. (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: On May 16th, you will go to the United States, right? (D) F: Sir, you can check in our hotel on May 17th.

Output: B


Input: Consider Input: F: It's so cold today would you mind my closing the window? ,M: Of course not.
(A) F: I will ask others to mend the window. (B) F: Thank you! I will shut the window now. (C) F: I am afraid I did not quite catch what you were saying. Please repeat it. (D) F: Thank you for closing the window for me.


Output: B