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".

[Q]: A pitcher pitches a ball to the batter. the batter <sep> (A) bats the ball really far. (B) is deflected by the bat. (C) misses, throwing the ball into the field. (D) takes the envelope down and lays it down.
[A]: A

[Q]: People are seen walking around a neighborhood with some walking dogs. A young girl walks a dog around the area. another man <sep> (A) walks on a leash behind the dogs. (B) walks in and out of frame while juggling balls. (C) follows her from behind. (D) walks a horse and leads into credits showing horse grooming tools.
[A]: C

[Q]: [header] How to prevent kidney stones in dogs [title] Make sure that your dog always has access to fresh, clean water. [step] Water helps to dilute your dog's urine, which keeps the minerals in the urine suspended in fluid. Drinking enough water also makes your dog urinate on a regular schedule, which helps to flush the minerals in the urine from your dog's body. <sep> (A) [title] Make sure that your dog's water bowl is and properly fitted with a water bottle. [step] Check the bottles at your pet store and make sure that your dog's bowl has correctly fitted and is a proper height. (B) [substeps] Change your dog's water every day and clean his bowl a few times a week to minimize bacteria. [title] Give your dog the right amount of water every day. (C) [title] Try to lower your dog's weight. [step] If your dog has kidney stones, it may be hard to keep the weight down. (D) Avoid water with added electrolytes, which can lead to kidney stones. [substeps] Your dog's water bowls are one place that should never be refilled since their surfaces can be contaminated.
[A]:
B