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". 

[EX Q]: [header] How to prune dracaena [title] Prune your plants in the spring before they hit the growth period. [step] From april to may, your dracaena plant comes out of rest mode and gets ready to go into the blooming season. Pruning your plants before they hit the growth period keeps them healthy. <sep> (A) This also makes it easier to shape the plants into your ideal look. [substeps] While you can prune your dracaena whenever you'd like, this helps encourage new, healthy growth. (B) [substeps] Dig around your plant and dig through the leaves and stems. Then, break or slice up any missing leaves or stems. (C) Cutting back all the flowers is absolutely essential to maintaining the stage of the plants that produce most of the foliage and fruit. [substeps] Your herbs should be pruned throughout the spring rather than the summer as this can cause them to produce fewer blooms and appear stunted. (D) It promotes a firm, healthy growth cycle for the plant. [substeps] Use a small garden pedometer to determine how many plants you should prune.
[EX A]: A

[EX Q]: [header] How to prevent greasy hair [title] Shampoo properly. [step] Apply a small, quarter-sized amount of shampoo to your scalp and massage vigorously with your fingertips. Then, work the lather through your hair and rinse. <sep> (A) [title] Rub a dime-sized amount of baby oil in your palm. [step] Squirt a dime-sized amount of all-purpose baby oil into your palm and then use the back of a spoon to massage the lather into your hair. (B) Body wash will also work well to loosen the oil from your hair and prevent it from slacking off. Comb your fingers through your hair to ensure that all areas of your hair are clean. (C) [substeps] Whether you have wet or dry hair, lather the lather gently and never hold it in place for more than one second. [title] Consider bed-wetting your hair as often as you can. (D) Rinse hair thoroughly so no shampoo is left behind. Washing your hair should take about five minutes.
[EX A]: D

[EX Q]: [header] How to sleep in a hammock [title] Get a hammock made of nylon. [step] Look for hammocks made of parachute nylon, as they will be the most comfortable to lay in for a long period of time. Avoid hammocks made of rope or slats, as they can cause discomfort and rope burns. <sep> (A) [title] Make sure the hammock is 4 feet (1.1 m) wide. [step] Hammocks made of other materials like nylon for durability are better for sleeping outdoors than those made of synthetic materials. (B) [substeps] Nylon is heavier, meaning that it will wear out faster, or shrink faster, after being wet for long periods of time. [title] Buy a hammock made of a light material. (C) [substeps] You can buy parachute nylon hammocks at your local outdoors store or online. [title] Choose a hammock that fits your height and weight. (D) [substeps] You can use an existing hammock that you already own or purchase one for a lower price. Hammocks made of other materials that have fallen into use are preferred over smaller ones.
[EX A]:
C