Testosterone is a steroid hormone; its release from the testes in males ... ...

Testosterone is a steroid hormone; its release from the testes in males is controlled by gonadotropin-releasing hormone (GnRH). Which of the following statements is true?
(A) Both of these hormones affect target cells using a second messenger system.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 14. The Nervous and Endocrine Systems