Studies of the Effects of Sex Hormones in Adults Have

Studies of the effects of sex hormones in adults have shown that:

A) testosterone improves rats' ability to find the platform in a water maze.
B) women tested at points in their menstrual cycle when estrogen is high outperform women tested when their estrogen is low.
C) recall of words is worse in women than in male-to-female transsexuals undergoing estrogen therapy.
D) testosterone may promote learning on tasks requiring recall of specific verbal information.