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". 

A room is shown with an acoustic guitar lying across a beige sofa and a stone art piece in front of the sofa with rocks in it. a person, face unseen , <sep> (A) is standing in front of the rock wall with canvas in front of him and paints on a pallet. (B) begin to play the guitar and an image of a man teaching him how to play while he's playing backs into her music room and onto a white screen, not a person else. (C) holds a lit cigarette and the approached to lift up the guitar in a lounging pose. (D) approaches the sofa and picks up the guitar.
D

A man in yellow glasses takes a drink out of a water bottle. People are running across a finish line of a race. someone <sep> (A) falls back on the sand and gets trampled. (B) puts a medal around another person's neck. (C) crashes into the backstretch lane. (D) holds up crumpled sticky things.
B

[header] How to make martinis [title] Add the ice, gin, and vermouth to a cocktail shaker and stir well. [step] To make the martini, you'll need a cocktail shaker or mixing glass. Fill it with cracked ice , 2 ½ ounces (74 ml) of gin and ½ ounce (15 ml) of dry vermouth. <sep> (A) Stir the top of the shaker or pitcher to mix the ingredients. [substeps] If you don't have a shaker, make one by knocking on the back of the shaker or on the top of the glass. (B) Use a long spoon to stir the ingredients for about 15 seconds or until it's well mixed. [substeps] If you prefer, you can shake the martini to mix it together. (C) [substeps] Before adding the gin, make sure you thoroughly mixed the ingredients. Any excess liquid will melt and thicken the cocktail as you drink it. (D) [substeps] If you prefer a sweeter drink, you can add in a pinch of cinnamon or half of a lemon instead. [title] Cover the shaker and shake for a few minutes.

B