During the Menstrual Phase of the Uterine Cycle

Multiple Choice

During the menstrual phase of the uterine cycle,

A) a new ovarian follicular phase is beginning.
B) estrogen and progesterone levels reach their lowest concentration.
C) vasoconstriction of the uterine vessels occurs in response to release of a uterine prostaglandin.
D) the corpus luteum degenerates.
E) all of these answers.