Instructions: 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: [header] How to keep an older dog warm in cold weather [title] Learn about your breed's susceptibility to the cold. [step] Certain breeds of dogs will be more affected by the cold than others. Determine your breed's susceptibility to the cold in order to know which precautions you need to take. <sep> (A) [substeps] Breeds of dogs that will be affected by the cold include german shepherds, yorkshire terriers, american collies, shorthaired terriers, and lab dogs. Also consider your dog's weight as well. (B) [substeps] Consider the length of your dog's annual hibernation. Older dogs can attempt to hibernate in cold temperatures for several months and you and your dog will need to buy a waterproof sleeping bag that you won't fall asleep in. (C) Some breeds are more susceptible to the cold than others. [substeps] Wear gloves when handling sick or freezing dogs. (D) Older dogs will always be a bit more sensitive than younger dogs of the same breed. [substeps] In general, the larger your dog is, the better they will be at tolerating the cold.
Output:
D