Question

Is the following definition of a dog reversible? If yes, write it as a true biconditional. A dog is a mammal. A. The reverse is false. B. The reverse is true. An animal is a dog if(and only if) it is a dog. C. The reverse is true. An animal is a mammal if(and only if it's a dog) D. The reverse is true. If an animal is a dog, then it is a mammal