Which Is TRUE During the Luteal Phase of the Menstrual Cycle

Multiple Choice

Which is TRUE during the luteal phase of the menstrual cycle?

A) Both estrogen and progesterone concentrations are kept low by negative feedback.
B) Estrogen concentration remains low,while progesterone concentration rises to a peak.
C) Progesterone concentration remains low,while estrogen concentration rises to a peak.
D) Progesterone concentration in the plasma is high,but estrogen concentration rises even higher.
E) Estrogen concentration in the plasma is high,but progesterone concentration rises even higher.