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: An introduction comes onto the screen for a video about rock climbing and a man introduces what will happen in the video. a men in a blue shirt <sep> (A) is doing a jump and falling off, then he begins to climb along the rock face with another by him. (B) stands behind a rock wall talking. (C) is shown climbing all the way to the top of a rock. (D) and the interviewer is inside of a gate in a park and he begins by jumping up to the top of a roofed wooden fence to do various things.
Example Output: C

Example Input: [header] How to train chickens to return to their coop [title] Prepare your chicken coop. [step] Before you can train your chickens to return to the coop in the evening, you need to ensure the coop is set up properly for your chickens. A basic chicken coop should provide at least twenty-four square feet of space and multiple places for chickens to perch. <sep> (A) To ensure proper lighting, you will need to buy a coop lamp or turn off the overhead light. You will also need to provide adequate heat. (B) Your chickens will probably also need a hutch, cart, or larder to keep them warm. All three features are important as you start building your chicken coop. (C) [substeps] Coop space should be compatible with how large or small your chickens may be. Don't space your chickens too close to each other. (D) [substeps] Make sure there is a plentiful supply of food and water inside the chicken coop. Wood beams mounted horizontally can provide good perching space for chickens.
Example Output: D

Example Input: [header] How to complete a schedule d form [title] Separate short term and long term gains and losses. [step] This is mainly what you're tracking in form 8949 and schedule d. your gains and losses are based on your capital assets. Capital assets are anything you own that can make or lose money throughout the year. <sep> (A) By separating these items, you'll be able to predict exactly how large your gains or losses are going to be. [substeps] To get a breakdown of total gains or losses, " total " is generally the name of your capital assets. (B) These assets are assets you can purchase and distribute with a clean paycheck if you sell them too quickly. [substeps] Up-to-date financial statements and financial data can be valuable to track for errors. (C) Losing these assets will not be a problem if you retain the same investments in the same manner after retirement. [substeps] Also, your gains and losses do not need to be proportional to each other. (D) They include things like your home, car, artwork, and collectables. They also includes investment assets like stocks, bonds, and some properties.
Example Output:
D