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". 
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Question: [header] How to handle a dog's nightmares [title] Decide whether to wake up your dog. [step] When your dog is having a nightmare, your first instinct may be to wake up your dog. However, this isn't always the best idea. <sep> (A) Waking up your dog would disrupt its sleep cycle, causing it to feel confused and possibly lash out at you. It's often better to let a dog continue sleeping through the nightmare. (B) If your dog's nightmares persist and you aren't willing to take the time to monitor your dog, it might be best to enlist the help of a veterinarian. There are several reasons for this : [substeps] When your dog is having a nightmare, your own judgment is impaired. (C) If your dog is claustrophobic or is fear fearful, you will want to be as calm as possible while your dog is having the nightmare. If the fear is mild to moderate, choosing an alternative position or location may not be a good idea. (D) While nightmares are real, traumatic experiences can also happen. [substeps] Nightmares also occur in dogs that have nightmares caused by trauma.

Answer: A


Question: A manager explains the players how to play jai-alai while a group of boys observe the training. then <sep> (A) , two teams play polo match with women that talk to the camera. (B) , the girls stand together and play on the field in different manner, while players stand on the sides of the field. (C) , the coach continuously shows the players how to use the position. (D) , the players take turns to hit balls, and the manager shows to hit the ball.

Answer: D


Question: And introduction comes onto the screen for a video about how to remove a bike chain. a person sitting next to a bike <sep> (A) runs his hands around the chain on it. (B) is assembling a handle. (C) is about to look at the chain from which it was removed, and he starts swinging his legs around in circles. (D) demonstrates how to remove and replace a bike chain using a small tool.

Answer:
D