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:
[header] How to make silver nitrate [title] Wear proper protective equipment. [step] The chemicals necessary for this process are highly toxic and can lead to injury if not handled properly. Eye protection, gloves, and a lab coat are necessary to remain safe. <sep> (A) You should also wear long, loose sleeves or long pants to protect yourself from these hazardous chemicals. Be sure you wear good quality work clothes. (B) Long pants and closed-toe shoes, preferably without mesh, should be worn to protect against floor spills. [substeps] Eye protection should completely cover your eyes and the sides of your eyes to protect from splashes. (C) Your lab coat can protect your skin and prevent pollution while working. Ask your local hazardous waste management company to provide you with an appropriate safety gear. (D) Wear full, protective safety gear as well to get the job done effectively. [title] Choose a location for your lab lab.

Ex Output:
B


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:
[header] How to respond when a gay friend comes out of the closet [title] Be civil regardless of your beliefs. [step] Not everyone shares the same beliefs and it's possible that you may have reservations about homosexuality. While you have every right to maintain any set of beliefs you wish, don't hold your friend to the standard of your belief system. <sep> (A) [substeps] Even if you don't understand, try to appreciate the fear and stress involved in coming out to you. Your friend is still your friend, regardless of your feelings about homosexuality. (B) Acknowledge the fact that he or she just went through a long and troubled process and is doing this out of anger. [title] If someone comes out, be prepared to listen to their comments. (C) Doing so can cause tension and excitement in your interactions, which can be disastrous for friendships. [substeps] Whatever your beliefs are, don't keep them in the dark. (D) Try to understand his or her perspective and emotions without judgment or unwelcome criticism. [substeps] If a friend comes out of the closet despite his or her beliefs, accept the fact that it's rude and hurtful.

Ex Output:

A