It Is Common for a Brain to Be More Masculinized

Multiple Choice

It is common for a brain to be more masculinized in some areas and more feminized in others.Why?​

A) Different genes are present in the neurons of different brain areas.
B) ​Sex hormones exert their effects by different mechanisms in different areas.
C) ​Different brain areas reach maturity at different ages.
D) ​As one brain area grows, it leaves less room for growth of other areas.