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".

Input: Consider Input: A person is seen riding around on roller blades and performing a grind on a bar. several more clips <sep> (A) are shown of the boy riding around on the equipment as well as sit on the floor and play pool. (B) are shown of people driving around on machines with one person riding in front. (C) are shown of the athletes performing tricks in various stretches as well as throwing a ball off into the distance. (D) are shown of the person performing grinds with roller blades as well as other flips and tricks.

Output: D

Input: Consider Input: [header] How to make black coffee [title] Purchase freshly roasted, whole bean coffee. [step] If you can't purchase it directly from the roaster within a week or so of it being roasted, opt for a vacuum-sealed bag from a reputable national coffee-bean roaster. [title] Purchase your own coffee grinder, or grind it in the store. <sep> (A) [step] If possible, choose a burr grinder in place of a normal blade grinder. For best results, grind the coffee fresh right before brewing each day. (B) [step] Grind coffee beans in the near-black zone of a coffee grinder. You can use either a regular-size grinder or a pre-grind grinder to grind your coffee. (C) [step] Modern coffee grinders have drawbacks, as they require higher temperatures to make purified coffee. Where possible, purchase one that comes pre-boil. (D) [step] Print it onto a piece of paper, remove the lid from the coffee grinder, and grind the coffee beans in the machine's center. [title] Unplug the coffee grinder and plug it into the wall outlet.

Output: A

Input: Consider Input: [header] How to tell if a girl is messing with you [title] Watch how she flirts. [step] How a girl flirts can give you an idea of whether she is really interested. Watch and take note. <sep> (A) A girl who flirts playfully but doesn't flirt back, then that person is probably interested, too. [substeps] Wait until the two of you are alone to try flirting. (B) It's good to see whether an outgoing girl uses her body language to let you know she's interested in you. See if she has a subtle pout, for example. (C) How intense is her flirting? Does it seem light-hearted and friendly? This may mean she's not seriously interested. It could be something more if her attention feels like more than just play, though. (D) [substeps] If she teases you back once on a test, she may want to use it again on the next test. On a new test, she may flirt lightly and then joke around a little, but not with a lot of energy.
Output: C