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". 

Example Input: [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.
Example Output: C

Example Input: [header] How to fake stainless steel appliances [title] Buy some stainless steel contact paper. [step] You can find it at your local home improvement store or online. How much you buy will depend on which appliances you plan on covering. <sep> (A) Pure stainless steel contact paper takes around $10 per share. [substeps] Buy your state's " grants1 " size or 15 millimetres. (B) Pre-cut contact paper works perfectly for this project. [substeps] Do not purchase pre-cut contact paper from a home improvement store. (C) Either use a commercial stainless steel contact paper for your stove, refrigerator, and microwave units. You can also use water mixed with food grade soap or titanium coated with cooking spray. (D) [substeps] Stainless steel contact paper is plastic-based, so it cannot withstand heat. It is not suitable for surfaces that get hot, such as stovetops.
Example Output: D

Example Input: [header] How to treat vaginal prolapse [title] Change your activities to prevent stress to the vaginal walls. [step] If you have only mild vaginal prolapse, your doctor will likely recommend modifying your activities to avoid heavy lifting and/or straining. This will reduce the stress on your pelvic floor muscles, and may help to improve (or at least to prevent worsening of) your vaginal prolapse. <sep> (A) [substeps] Keep in mind that surgery is not necessary with vaginal prolapse. You can leave the prolapse untreated without any negative impact on your health. (B) [substeps] This can be as simple as, " weight lifting " or " driving a tractor. " [title] Clean your vagina regularly to prevent vaginal contamination. (C) [substeps] Power lifts are suggested as they produce more fluid and restore motility. They help to ease the pressure in your pelvic floor muscles and strengthen the uterus. (D) When you exercise, continue to keep your pelvic floor muscles contracted and active. This will help to better balance them out.
Example Output:
A