Females Are Often Perceived as More Emotionally Expressive Than Males

Females are often perceived as more emotionally expressive than males.This could be because females:

A) have more metabolic activity in the brain regions involved in emotional expression.
B) have a slightly smaller hippocampus,which regulates emotions.
C) have more cerebral cortex devoted to the parts of the brain that identify emotion.
D) are socialized to show their emotions more than males.