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". 

[EX Q]: 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.
[EX A]: A

[EX Q]: [header] How to kosher liver [title] Be particular about the liver you buy. [step] The liver should come from a kosher species (cow, calf, or chicken) that was slaughtered in the matter described by the torah. [substeps] The fats of the liver should have been removed during the time of slaughter. <sep> (A) Ideally, you should purchase liver from an animal that was slaughtered no more than 72 hours ago. The koshering process itself should be performed within 72 hours. (B) If the animal is injured or besides getting sick, this meats are extremely likely to be a nutrient rich predator in the long run. It's equally important that they are properly labelled. (C) The pits of the liver are flat so the meat itself remains at all times. The meat also wears down over time, which means a carcass will retain more fat, protein, and fat. (D) Some animals such as cattle or ducks should be juiced in the same manner, for more flavor. Machamps (cow or goat, mixed in fat or marbling) should be roasted in a batserver and let stand 20 minutes before cooking.
[EX A]: A

[EX Q]: [header] How to drape window scarves [title] Hide an unsightly curtain rod. [step] Remove the eyesore of curtain hardware by draping a window scarf expertly over it. This technique works well when brackets have to be placed outside the window frame. <sep> (A) Simply hook the scarf over the ends of the outer rod on each side and let the ends majestically flow down. [title] Use a scarf to frame your blinds or sheers. (B) Prevent a window hanger from breaking by allowing curtains to hang along the window in rows, or by nesting wool around the rods to shield the eyedropper pieces from the sunlight. [substeps] If you opt for a swiss army 12 loop rod, remove the ends and cut them into thin strips from the factory back rent sheet (more at home improvement stores. (C) [substeps] Store-bought curtains are most effective through walls because they're sturdy and don't soak up too much light. They won't be obvious from outside the window, but they hide more light than traditional blinds because they don't seal into a pattern. (D) Hang the entire scarf along the side of the window with the two front slats facing each other. Mount the two side slats by connecting the windings with bolts.
[EX A]:
A