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 diagnose canine distemper [title] Notice if your dog becomes feverish and loses his appetite. [step] Once your dog has contact with the virus, it may incubate in his body for three to six days. Your dog may become feverish, lose his appetite, and have general head cold symptoms like a runny nose. <sep> (A) Notice any of these symptoms : [substeps] You can check your dog's temperature at night by holding up a light bulb above his face. You may see the puppy succumb to hypothermia. (B) [substeps] Normally your dog will retain its normal level of temperature in about four hours. As the virus ages, its tapeworm damage can cause weakness, weakness, and dehydration. (C) This can indicate a patina during the treatment. [title] Pay attention to your dog's weight. (D) He may also appear slightly off color or noticeable ill. [substeps] Blood tests taken at this time would show a dip in his white cell count, as his body is using up white cells to fight off the infection.
Output:
D