Lactation Prevents the Menstrual Cycle for a Few Months After

Multiple Choice

Lactation prevents the menstrual cycle for a few months after childbirth because:

A) it increases the release of LH.
B) suckling inhibits GnRH release.
C) it increases the release of inhibin by the breast tissue.
D) it increases the level of testosterone in the blood.
E) it increases the level of estrogen in the blood.