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 make marijuana tea [title] Grind the marijuana buds. [step] Separate out the stems and seeds if necessary, and use a grinder or chop up the buds with a sharp knife until they're finely chopped, but not completely powdered. [title] Mix the buds with butter. <sep> (A) [step] Place them together in a bowl and use a spoon to mix up the buds and butter, making sure each piece is coated with fat. You want the grounds to be completely coated, but not soaked in butter; too much will inhibit the release of thc. (B) [step] Combine two tablespoons (59.6 ml) of butter with 1 teaspoon (4 g) of ground black pepper. Spread this mixture over the marijuana buds, and let it sit for several minutes. (C) [step] Pour the liquid ingredients from the grinder into a blender or food processor, then pulse the contents until well mixed. [title] Punch holes in the buds with a fork. (D) [step] Pour the softened butter into the potting mix. Press the buds down with your finger to blend them together without flaking off.
Example Output: A

Example Input: [header] How to whitewash trim [title] Set up your working area. [step] Cover the floor with a drop cloth to keep dust and whitewash off of it. Open screened windows and doors to provide ventilation. <sep> (A) Keep the temperature low to avoid fumes and keep your work area clean. Additionally, have at least one sheet of newspaper in case a lightning storm or other electrical emergency strikes strikes your home. (B) Set all of your supplies in a corner of the room so you know where everything is. [substeps] If you don't have a lot of experience painting, use painter's tape to tape off areas you don't want to get whitewash, like the walls. (C) [title] Consider using a small piece of velcro, preferably one in a similar color, to lock in moisture in the paneling. [step] For smaller boards, make sure to allow at least 24 hours for the patch to dry between applications. (D) You may also want to swing curtains over them for a soft and light cleaning that will come before whitewashing. There are online projects to do, or you can perform laser removal yourself.
Example Output: B

Example Input: [header] How to convert bitcoins to dollars [title] Compare the rates offered by different conversion services and choose the best one. [step] Even when the average bitcoin conversion rate improves, different conversion services offer different conversion rates. For instance, suppose one service offers to convert your bitcoins at a rate of 1 to $5 , 000 and another offers to turn 1 bitcoin into $5 , 200. <sep> (A) Just because a service offers to convert bitcoins, it doesn't mean it will convert them. See how to convert bitcoins into dollars for more information. (B) You cannot purchase replacement bitcoins for your gains. [substeps] If you buy replacement bitcoins for your gains, you must pay a fee to have your subsequent bitcoins made available to your customers. (C) All other things being equal, you should go with the second service to get the most out of your bitcoins. [title] Convert your bitcoin using a service with low fees. (D) You might compare the rates offered as well as their differences before making a decision, for instance. [substeps] Pay attention to the difference between each service so you don't end up with two that have identical rates.
Example Output:
C