The dominant large animals on Earth today are mammals. Before the giant meteorite impact 65 million years ago:
A) Mammals also were the dominant large animals.
B) Very large mammals coexisted with the dinosaurs; those very large mammals have gotten smaller after the meteorite impact because the mammals don't have to be big to compete with the dinosaurs any more.
C) Small mammals coexisted with dinosaurs, and after the dinosaurs were killed by the meteorite, the small animals wanted to become bigger and so made themselves bigger.
D) Small mammals coexisting with the dinosaurs were not able to outcompete the dinosaurs for big-animal jobs, but after the dinosaurs were killed, some large mammals evolved from small mammals to fill the large-animal jobs.
E) Moose were the dominant large
