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 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.
[EX A]: C

[EX Q]: [header] How to buy a wood burning stove [title] Consider your heating needs by evaluating the size of your home. [step] You will need to determine the heat load necessary to maintain the square footage of the area you want heated. Heat load is measured in btus, or british thermal units. <sep> (A) Inquire about btus and thermal units using online resources. [substeps] Btus heat packs can be found at home improvement stores, department stores, and some gas stations. (B) To determine how much heat you need, pay attention to the dimensions of each room you intend to fire in. [substeps] The larger the square footage, the larger your fire seats will need to be. (C) You will need 25 to 30 btus per square foot. [substeps] Measure each room to be heated with measuring tape. (D) Btus are rated from 2000-1000. Btus can be changed or altered depending on the size of your home.
[EX A]: C

[EX Q]: [header] How to share videos on facebook [title] Navigate to facebook and log in. [step] Locate your friend's video that you want to share. [title] Click the blue " share " button underneath the video. <sep> (A) [step] This will take you to their profile page. [title] Hover over the " account " tab. (B) [title] Enter the permission code you've set up for facebook. [step] Facebook will grant you permission to share the video as long as you accept it with consent. (C) [title] Click " share link " in order to post the video for your friends to see. [step] Read more about editing the video information and privacy settings in the " editing a video's privacy and information details " section at the end of this article. (D) [step] This should be located on the upper right hand corner. [title] Click the new video you want to share.
[EX A]:
C