In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".

Ex Input:
A man is preparing to run and jump. he <sep> (A) runs very quickly down the track. (B) is doing a stunt, then dismounts to the ground. (C) releases the bar, and lands a few feet away. (D) is blindfolded and jumps full speed into the sand.

Ex Output:
A

Ex Input:
A man demonstrates how to walk across and navigate a slackline in a grass courtyard in front of apartments. the man <sep> (A) demonstrates how to traverse a low brick fence on a residential street. (B) walks slowly across the slackline while talking and stopping to talk to passerbys. (C) stands on a slackline balancing himself with his arms before the clip cuts to him interviewing. (D) poles backward, glasses on and he begins to walk while holding the slackline while walking across the courtyard.

Ex Output:
C

Ex Input:
[header] How to write murder mysteries [title] Read as many murder mysteries as you can as it will expand your knowledge. [step] The more you learn about them, the better. By watching murder mysteries as well as reading them you may gather some ideas about how murders are solved. <sep> (A) Watching real life cop shows may also help. If you are serious about writing and can get the permission, it may be a good idea to shadow a detective team or at least ask them how murder investigations work. (B) [title] If you enjoy reading murder mysteries from textbooks, ask someone who likes reading to quiz you on detective books. [step] This is excellent for plotting out the details and notes needed and creating your own plot. (C) [title] Find any clues, write them down, and keep a notebook of them. [step] You may find crossword puzzles as the idea is to sit down and write in a notebook. (D) You can give helpful articles and guidance to current authors to show past favorites and expand your knowledge. [title] Make flashcards and ask people where they read.

Ex Output:
A