Testosterone Replacement Therapy Studies Have Shown That This May Increase

Testosterone replacement therapy studies have shown that this may increase ___ but to produce the most improvement,the testosterone has to ___.

A) long-term memory and working memory,be combined with estrogen
B) working memory,verbal memory and spatial memory,have undergone aromatization
C) working memory,verbal memory and spatial memory;delivered in the form of dihydrotestosterone
D) All of the above