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".
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Question: [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.

Answer: C

Question: [header] How to adapt your bathroom if you're blind or visually impaired [title] Create a place for everything. [step] If you are blind or visually-impaired, it is important for you to be able locate the items you need in your bathroom. In order to do this, you must create an organizational system. <sep> (A) Arranging your furniture in a way that makes sense to you is crucial for helping you know where everything is. If you don't have an organizational system, make some by placing some of your favorite items along the counter or toward the bathtub at home. (B) This way, you will always know where to find things. [substeps] For instance, you might store towels and washcloths on one shelf in your bathroom, and soaps and cosmetics on another. (C) The more organizing you make, the more time and energy you will be able to spend in your bathroom. [substeps] Try setting up a spot where you can actually see something. (D) This will be based on how you do your business. [substeps] Make sure your appliances are separated from your bathroom.

Answer: B

Question: A person is making a bow out of ribbon. they <sep> (A) put on a decorating paper, put the bow on top of it, roll the paper over it, fasten it around the bow twice. (B) tie the ribbon onto a wrapped package. (C) tie several strings and put pins in the ends of the bow. (D) hang the bow on a tree stump.

Answer:
B