Comparing the Structure of the Human Brain to That of Other

Comparing the structure of the human brain to that of other animals reveals that:

A) human brain organization bears little or no resemblance to that of lower animals, such as birds and fish.
B) all animals have a cerebellum, but only humans and other primates have a cortex.
C) the human cortex is much more complex than that of lower animals, which makes up for the absence of a cerebellum in the human brain.
D) the basic structure of the human brain is similar to that of many other animals, but a higher proportion of the human brain is devoted to the cortex.