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". 

[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.
D

[header] How to make two different size breasts appear the same [title] Pull your hair over the shoulder of the smaller breast. [step] If you have long hair, use it to your advantage by sweeping it over the shoulder of the smaller breast. Doing so will visually " pad " the smaller breast, balancing them out and making them appear to be the same size. <sep> (A) [title] Wear an asymmetrical top. [step] Asymmetry is a perfect tactic you can use to combat unevenness. (B) [substeps] Pull the hair up and over the one smallest breast to cover the smaller one. If your struggling to get the hair covering that little breast covered, either use a fake hair scrunchie or duct tape to get rid of the extra excess hair. (C) [title] Clip the section of your hair that isn't showing as much into a ponytail. [step] You want your ponytail to go up most of the way to the crown of your head. (D) [substeps] Tuck the small breast under the large one. Pull it under one arm and vice versa.
A

[header] How to prevent a heart attack [title] Eat a balanced diet. [step] To help prevent blockage and reduce plaque buildup in your heart, you need to consume healthy, balanced meals. In general, a balanced diet is rich in fruits, vegetables, whole grains, and low-fat or fat-free dairy. <sep> (A) [substeps] Don't go overboard with this diet. Don't over regulate yourself and overeat. (B) It also includes lean proteins, such as poultry, fish, and beans. You should also only eat foods low in saturated fat, trans fats, and cholesterol. (C) Avoid fried foods and low-fat dairy products as much as possible. [substeps] Try to choose foods from all the different food groups, since they help promote blood flow through your heart and keep you healthy. (D) [substeps] Have 3 ounces of vegetables per day , 1 serving of fruit, and 1/2 cup of dairy. Take breaks every minute and watch for any signs of blockage.

B