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 dog is outside in a large field and runs towards a man holding a yellow frisbee. the man <sep> (A) then throws the frisbee, the dog catches it and begins swimming back and forth in the water. (B) frisbee the dog around the frisbee and the dog chases the frisbee and catches the frisbees. (C) attempts to catch the frisbee but it is deflected by the large dog. (D) then begins walking and throws the frisbee for the dog to catch.

A: D
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Q: [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.

A: A
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Q: [header] How to select an ielts coaching center [title] Ensure that the institution is reputable. [step] A reputable and well known institute is more likely to have a larger student base, with more resources and opportunities for exposure. This will help in interacting with others who are also planning on similar careers and thus lead to the exchange of ideas and information. <sep> (A) [title] Search online for the usda entry-level training centers that have accredited programs. [step] Conduct some research on these programs in order to find a place to start. (B) [title] Learn about the quality of the teachers. [step] The quality of teachers is of utmost importance, as ielts depends heavily on the expertise of trainers. (C) This is especially important if you are looking for a class setting or two in that department. [substeps] Do not plan an event or the event for students whose educational or training level you will teach or oversee. (D) [title] Ensure that your credentials meet academic standards. [step] There are many regulations regarding mentoring a student and his or her eligibility for the program.

A:
B
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