Given the task definition and input, reply with output. 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 gain potential health benefits from activated charcoal [title] Pick a form. [step] You can find activated charcoal in forms like liquid, tablets, pills, suspension, or powder forms. You can also take activated charcoal in forms like lemonade or smoothies. <sep> (A) What you choose is up to you, based on how you want to use it. The tablet and pill forms tend to be more concentrated. (B) Make sure that you pick a form that works for you. [substeps] Commonly activated charcoal is usually given in capsule form instead of liquid form. (C) [substeps] Dispensing activated charcoal isn't as easy as handing over the mixture to your parents. It is usually quite painful and requires medical professional supervision. (D) In general, activated charcoal can be used in a variety of ways and is proven to benefit different types of health conditions and diseases. [substeps] Activated charcoal can be used to treat meningitis of the liver, rheumatoid arthritis, and cancer.
A