Which of the following passages uses circular reasoning?
a After Herve explained that he thought they should get a dog, Aubrey replied that a cat chased her down the stairs once.
b Dogs are better than cats because dogs just are better pets to have.
c Maribel was deciding what dog to adopt, when Todd said to her, "You can't take care of a dog because you don't like cats!"
d Nine out of ten people agree that dogs are the best pets to have.