Tammy and sara both agree that dogs typically have four legs, a tail, and fur. tammy thinks that dogs also tend to bite small children while sara thinks they tend to be friendly. what explains the differences between what tammy thinks and what sara thinks? a. tammy and sara have different borderline members of the category of dogs. b. tammy and sara have different categories of dogs. c. tammy and sara have different concepts of dogs. d. tammy and sara have different necessary features of dogs.