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 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.
[A]: D

[Q]: 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.
[A]: C

[Q]: [header] How to lower cholesterol fast [title] Start exercising. [step] Exercise improves how your body handles fat and cholesterol. But it is important that you start slowly and don't do more than your body can handle. <sep> (A) Gradually reduce your working hours in order to improve muscle health. [substeps] If you are an activity fanatic you may want to try jogging, swimming, rowing, cycling, or canoeing. (B) [substeps] If you have health conditions, don't pressure yourself too hard. Split between aerobic and cardio workouts for better results. (C) [substeps] Obviously, you should start with lifting weights that are not too heavy. This will tire you out a little, and add weight to your body. (D) Consult your doctor before beginning a new exercise program to make sure that you will be able to handle it. Then increase the intensity slowly over time working up to between 30 minutes to an hour per day.
[A]:
D