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". 

[Q]: [header] How to calculate a light year [title] Define the light year. [step] A light year is a measure of distance equal to how far light travels in one earth year. Because distances across the universe are so large, astronomers use light years. <sep> (A) However, they can also be determined by dividing by a distance. [substeps] Some light years are used year-round. (B) For light year 2014, the main determiner is the sun. In the light year, the world is filled with light bulbs. (C) Without light years, discussing the distance between two stars would require the use of large, unruly numbers. [substeps] Another measure of distance you may come across when learning astronomy is the parsec. (D) [substeps] There are two kinds of light years: day and night. The two types of light years are known as night and day.
[A]: C


[Q]: A man wearing grey shorts kneels down on a carpeted floor and begins stretching. The man moves his right leg under his hip and in front of his left knee. the man <sep> (A) continues exercising his left leg. (B) is then sitting while he's exercising and putting a harness. (C) then begins looking comfortable about doing this and stretches. (D) begins to rock back and forth in a slow movement as he stretches.
[A]: D


[Q]: [header] How to sanitize your web presence before applying for a job [title] Search for yourself. [step] Instead of just looking in the " usual " places (such as your facebook profile), find out what appears when you do an internet search for your name. [substeps] Look under " everything " first. <sep> (A) Remember: build your own site, be independent, publish your own content on your personal blog. [title] Find the keywords that people can search for you. (B) Then, look under " job search " and check if there is a job description posted on the posted job. You can use a search engine to search for " lds " to find places in town that you may be interested in. (C) Try several search engines, but consider looking for " everything " which includes all web sites, news articles, images, videos, blogs and reviews. You may have no idea that a friend snapped an " incriminating " photo of you during that crazy drunken night and somehow it ends up online. (D) Most searches are universal, but some might find that there's a situation exactly as you might expect. On the other hand, you want to ensure all the pins on your twitter/instagram accounts are accessible and not just hazel.
[A]:
C