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 research the market before launching a product or service [title] Start by doing some qualitative market research. [step] You can do it with an agency or on your own. You only need few people (between 5 and 10) from your target market (potential customers) so it is possible to diy. <sep> (A) [title] Don't expect to work in a large company. [step] Meet people for a coffee, greeting and perhaps the business plan or abstract of a product you just started. (B) It can be very helpful to have people assisting in the research so you don't become too particular. [title] Conduct an analysis of the food, drug or cheese market. (C) The only important thing is not to choose some people that you know. This qualitative research has to be done in an objective and neutral way. (D) [title] Gather information in an essay, packet, card, book or letter. [step] This will help keep the reader engaged.
[A]: C

[Q]: [header] How to choose a dating site profile picture [title] Let them see you. [step] A profile picture's main purpose is to let potential matches see you. Because profile pictures tend to be small, you might want a picture of just your face or your shoulders and face. <sep> (A) Alternatively, you could create your own photo that includes the only aspect of your face that is not too large. [title] Optimize the picture to serve as a place to get ideas. (B) ( this is probably too self-deprecating and rather a trap for the stalker. ) showing them your face lets the potential date know exactly why you are happy with them. (C) That way, they can see you easily without even clicking on your profile. [substeps] That means getting an up-close picture. (D) And as a profile image can be a good way to portray your personality and show potential dates or non-potential matches, you should also have a picture of you together. You can use any picture of you as your profile picture if you have access to the internet.
[A]: C

[Q]: [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]:
A