Carla claims that she can classify a mammal according to a description of its mouth, jaws, and teeth. If Carla's claim is accurate, how does she most likely classify the animals?

A. as carnivores or herbivores, because mouthparts are adapted to eating either plants or meat
B. according to natural habitat or biome, because mouthparts are adapted to climate and other abiotic factors
C. according to average body size, because larger mammals tend to have more teeth than smaller mammals
D. as aquatic or terrestrial, because aquatic mammals tend to have smaller mouths than terrestrial mammals