Which of the Following Is True of the Physical Changes

Which of the following is true of the physical changes in a woman's body during pregnancy?

A) The development of mammary glands causes the breast's areola to lighten and narrow.
B) The placenta causes a large decrease in the levels of estrogen and progesterone produced.
C) The increase in hormonal levels leads to a corresponding decrease in vaginal secretions.
D) The increase in progesterone levels often leads to feelings of fatigue in pregnant women.