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". 

Example Input: A police officer is riding a horse down the street very slowly. many bystanders <sep> (A) cheer as he gets closer. (B) are walking by, cars are passing and casually moving along. (C) are standing up nearby. (D) join in to help him, and several other cars come along.
Example Output: B

Example 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.
Example Output: A

Example Input: [header] How to organize office files [title] Create file categories. [step] The first thing to do if you want to organize your files is decide what major categories you will use for sorting. Different kinds of offices will have different kinds of categories, but the general system is the same. <sep> (A) You need to figure out a system that sorts your files in a meaningful way. [substeps] For example, if you work in a law office and need to organize client files, you might sort by general case types: litigation, probate, corporate, administrative, and others. (B) Here are some examples of categories : [substeps] Microsoft office and powerpoint office office. Microsoft office has folders for all electronic files, such as spreadsheets. (C) Feel free to experiment with different categories to find the best use for each one. [substeps] Title categories are the most common, and if you prefer, you can always designate one niche for some of your files (like a top-10 trash can), and a sub-niche for anything you can remember. (D) [substeps] Notebooks, notebooks, binders, binders, and file folders are the easiest to organize and can all be divided into categories. Folders require a lot of space, so it's a good idea to have at least two of them organized in a single folder.
Example Output:
A