Lucas is writing a compare and contrast essay on killer whales and dolphins. His first body paragraph begins with the topic sentence "While orcas and dolphins are classified in the same family, they have some behavioral differences."

Which of the following supporting details would Lucas include after his topic sentence?

Orcas and dolphins both possess a melon, a fatty deposit that assists them in echolocation.
Orcas and dolphins live together in pods and help each other hunt for food.
Orcas feast on large prey, like seals, sea birds, and rays, while dolphins eat small fish.
Orcas have a flattened mouth with 46–56 teeth, while dolphins have a beak-like mouth with 72–104 teeth.