Which of the Following Statements About Brain Size Is True

Which of the following statements about brain size is true?

A) Elephants have a larger number of neurons in their brain than humans do.
B) Octopods have a larger number of neurons in their brains than humans do.
C) The neurons in human brains are larger than the neurons in other primates' brains.
D) The brains of leaf-eating primates are larger than the brains of fruit-eating primates.
E) The ratio of brain size to body size is larger in baleen whales than in dolphins.