Which of these is true about sex differences in brain anatomy? A. On average, males and females have the same anatomy for all brain areas. B. Wherever males and females differ in brain anatomy,...

Which of these is true about sex differences in brain anatomy?
A. On average, males and females have the same anatomy for all brain areas.
B. Wherever males and females differ in brain anatomy, testosterone is responsible.
C. Wherever males and females differ in brain anatomy, a gene on the Y chromosome is responsible.
D. The mechanisms of sexual differentiation vary from one area to another.