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 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.
[A]: A


[Q]: [header] How to avoid water retention [title] Have a healthy diet. [step] Ensuring you have a healthy, balanced diet is a good first step to avoid water retention. Water retention can occur due to imbalances in your diet, deficiencies of some vitamins and minerals, and having too much salt. <sep> (A) One study found that people with excess salt = no water retention. " imbalance " can add up as a reason for water retention and include making it much more difficult to stay hydrated. (B) Excess salt raises your blood pressure, resulting in inaccurate results. Look for foods that are low in salt and low in water. (C) Eating a balanced diet will help to reduce the chances of water retention occurring due to these issues. [title] Eat food that is rich in potassium. (D) [substeps] If you have recently cooked or baked a meal, make an effort to change your recipe one day. This can help your body prevent the retention.
[A]: C


[Q]: [header] How to impress your middle school teachers [title] Be a model student. [step] Follow school rules and show appreciation for the teachers and staff. Teachers will be impressed if you follow the rules, despite the many temptations to break them. <sep> (A) [substeps] Behave as your best self and be helpful towards your teachers. If you don't have an excellent grade on any tests, if they ask you to help, then show them that you can follow their rules and they'll see that you are a good student in no time. (B) Besides, being a model student means being very efficient and practicing the day to day practices, which are well worth the effort. Also, demonstrate an aptitude for certain or unrelated subjects like math, english, and writing. (C) Show teachers that you can handle any responsibility and never boss others around. [substeps] If you need help with a math problem, offer them additional guidance on how to solve it. (D) Following the rules shows that you can respect what is deemed appropriate in a certain environment, even if you don't agree with the policies. [substeps] School rules apply both in and out of the classroom.
[A]:
D