Which of These Statements Concerning the Menstrual Cycle Is NOT

Multiple Choice

Which of these statements concerning the menstrual cycle is NOT correct?

A) Before ovulation,estrogen and GnRH are involved in a positive-feedback loop.
B) Following ovulation,the corpus luteum begins to secrete progesterone and estrogen.
C) Progesterone and estrogen have a negative-feedback effect on FSH and LH secretion.
D) Estrogen causes the cells of the endometrium to become larger and secrete fluid,and progesterone causes the cells to divide rapidly.
E) By 7 or 8 days following ovulation,the endometrium is prepared to receive the developing blastocyst.