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: [header] How to give puppy shots [title] Talk with your veterinarian. [step] Not all dogs are good candidates for home vaccination. Call or meet with your vet to determine if your dog meets the basic health criteria. <sep> (A) Not all vets can be qualified for home vaccines, including medically recognized vaccines, if they have been improperly vaccinated against rabies. Research your state's laws regarding home vaccines and follow them to reduce your chance of your dog contracting the disease. (B) Tell him your dog is a good candidate for a home vaccination, and contact him or her to set up an appointment with your veterinarian. [substeps] A dog that needs a professional vaccination has certain health conditions that might undermine the vaccinations your veterinarian has recommended for your dog, such as a history of diabetes or a history of medical illnesses. (C) In general, not good breeders, puppies can very easily be ill. However, your veterinarian will be able to help you determine if your dog is a good candidate for home vaccination. (D) If you are concerned about how to give the shots, your vet can also talk you through the process or even let you watch a demonstration in-office. [substeps] Vets technically lose money by having you home vaccinate.
A:
D