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: Young boy talks to camera in front of drum set in a studio. young boy <sep> (A) plays on the drum set, and the cymbals, while intermittently speaking to the camera. (B) starts taking steps standing on a pedal holding a tool an trying to play an instrument. (C) drum set talk to camera and hold a dummy and cymbals. (D) starts unpacking drum set drum set as the camera captures his movements.
Example Output: A

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 teach yoga to kids [title] Set time limits for children according to their age. [step] Kids' bodies are still developing, so poses should not be held for too long, and the overall yoga session should match their age and ability. [substeps] Allow children 5 years old and younger to spend up to 1 minute or 60 seconds on each exercise or pose. <sep> (A) Younger children should only focus on asana, or relaxation routines, where your concentration is broken. Other exercises will include bending your legs backwards and placing your hands on your hips. (B) The total yoga session for small children should not be more than 15 minutes. Allow children who are 6 and older to hold poses and do exercises for up to 1-1/2 minutes, or 90 seconds. (C) Instruct them not to lift any weights or, if asked to, only do so one at a time. Children should not lift anything heavier than a pencil weight. (D) Demonstrate the methods in the videos and accompanying publications, and enforce these rules. If more children may be performing yoga poses during the day, supervise them closely with their parents and encourage them to sign up in another class if appropriate.
Example Output:
B