According to the Critical Thinking Box "'His' and 'Her' Brains

According to the Critical Thinking box "'His' and 'Her' Brains?":

A) neuroscientists have found no structural differences between male and female brains.
B) physiological gender differences are innate, biological, permanent, and hard-wired in the brain.
C) not all structural differences found in male and female brains lead to differences in measurable behavior or abilities.
D) research findings on differences in male and female brains conclusively support the belief that men and women think and reason differently.