instruction:
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".
question:
[header] How to choose a protein supplement [title] Choose whey protein to build muscle. [step] If you're looking for muscle-building protein, whey protein is generally your best option. Whey protein can come in the form of powder or pills and is commonly used when people are trying to build muscle via things like weight training programs. <sep> (A) By doing this, you're gaining more body fat and growing more muscle at the same time. [substeps] Whey protein can be found in half of the packaged foods. (B) Whey protein is also a low-fat protein, rich in red blood cells from bacteria. Although whey protein does not impart healthy fats to the body, whey protein helps build muscle, which you can grow and burn through exercise. (C) [substeps] Look for a whey protein powder or supplement with a high biological value. This measures how well your body can absorb the protein. (D) Whey protein occurs as a food chain, hence the slogan, " protein is fat free ". [substeps] Whey protein is complex and varies from patient to patient.
answer:
C

question:
[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.
answer:
C

question:
[header] How to grey wash wood [title] Lay down a tarp or dropcloth. [step] Choose a well-ventilated area to work in, and set down something to protect your floor. Newspaper is fine if the object is fairly small, but a tarp or large dropcloth will work better if it's a piece of furniture. <sep> (A) [title] Sand the wood to remove paint and imperfections. [step] Use a coarse sandpaper all over the surface of the wood you plan to apply the wash to. (B) [substeps] You don't have to make the surface completely white. Just make it some at least small enough to keep paint and dust from piling up under the piece of furniture. (C) Wearing gloves and a mask to protect yourself will also help prevent the grey cloth from dripping onto the floor. [substeps] Some people may also do a lab experiment to change the paint prior to using the cleaner. (D) If you work outside, always wear gloves and respirator. [substeps] Stand straight up with your hands planted on your hips or standing with a slightly bent back.
answer:
A