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 care for your dog on the beach [title] Find out whether your dog likes to swim. [step] Some breeds are natural born swimmers, like labrador retrievers, while other breeds are less adept in the water. Before you take your dog to the beach, where water conditions will be rougher and less predictable than a pool or shallow pond, you should know your dog's swimming skills. <sep> (A) [substeps] If your dog enjoys swimming but is not a strong swimmer, consider purchasing a dog life vest to help them float. A life vest does not replace supervision and attention. (B) You'll want to teach your dog as much about their swimming as you can in advance. You should also consider if they enjoy the water or just love it. (C) Stay in your house and keep your dog out of one area of your house at all times. Plan on doing some exercise on the way from your house to the beach. (D) [substeps] There are fish repellent materials offered by dog shops such as sodium milli2peat. If you have been meaning to become a health guard, talk to your vet.
Output:
A