Regarding the Human Sex Drive, Which of the Following Statements

Regarding the human sex drive, which of the following statements is/are TRUE?

A) A man's sex drive is related to the amount of androgens, especially testosterone supplied by the testes.
B) When a man chats with a woman he finds attractive, his testosterone levels actually increase.
C) The sex drive in women is related to estrogen levels, but also is closely related to the testosterone level in her bloodstream.
D) All of these statements are true.