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 prevent benzodiazepine overdose [title] Stick to the recommended dose. [step] The easiest way to avoid overdose is to follow the medication dosage provided by your doctor. Generally, you will start on a smaller dose, but your doctor may gradually move you up over time if you begin to develop a tolerance to the medication. <sep> (A) There are many different medication options on the market, including : [substeps] Benzodiazepine. This medication is regulated by the government and is available to everyone over the age of 55. (B) Either way, sticking to the prescribed dosage should help you avoid an overdose. [substeps] If you're unclear about how often you should take your medication, talk to your doctor or pharmacist. (C) [substeps] For example, changing your dosage twice a day may help, but other restrictions should be given. The key is not to take too much at once. (D) [substeps] At first, the entire dose should be given slowly. However, over time, a dosage greater than 20% of your total dose may be increased.
[EX A]: B

[EX Q]: [header] How to help stop police brutality [title] Share news stories about police brutality. [step] When you see good-quality articles about police brutality, especially those connected to recent events, share them on social media sites like facebook and twitter. This will help keep the topic fresh in the minds of your friends and followers. <sep> (A) You can even make a news page dedicated to your precinct or neighborhood, and give people posted online about police brutality relevant to your neighborhood. Cover these fan-fiction very well by understanding the facts that are relevant to your area. (B) [substeps] It can also be a great way to reach out to other people about police brutality. Many people will be sympathetic, even if they don't fully understand the danger or the costs for criminal action, and it can help cut down on potentially startling images of violence and embarrassment. (C) The good articles, and the news you've already shared, are also more likely to be read, because you'll be a link between the good and the bad. [substeps] Posting good news is key to providing easy access to world wide web news databases. (D) [substeps] Before posting an article, double-check the publisher and writer to make sure it isn't a form of fake news. Make sure you post about non-political things as well, that way people don't tune you out.
[EX A]: D

[EX Q]: [header] How to study the medical syndrome of hyperkalemia in humans [title] Study the electrolyte disturbance of k + in the body of humans. [step] This article discusses the electrolyte disturbance of k + ions that is called clinically hyperglycemia. This is one medical syndrome that is manifested by excessive amount of k + ions in the extracellular space between the cells of the body and in the blood plasma. <sep> (A) This excess of this ion in the body has many causes and is associated with distinct clinical symptoms. These clinical symptoms are the direct result of its physiological function in the body. (B) [title] Learn about the hyperkalemia of humans. [step] This type of hyperkalemia causes seizures, due to insulin loss due to excessive hyperglycemia in the cells. (C) This is referred to as the patient's " hypoglycemia syndrome. " [title] Learn about the causes of chronic hypoglycemia. (D) These ions are not necessary for the anatomy and function of the blood vessels. These ions are fed downward through the veins of the kidney.
[EX A]:
A