Which of the Following Is a Well-Documented Gender Difference in Brain

Which of the following is a well-documented gender difference in brain structure?

A) Male brains are more lateralized than female brains.
B) Female brains are more lateralized than male brains.
C) Language functions are governed by the right hemisphere in male brains and by the left hemisphere in female brains.
D) Female brains are more myelinated than.