Of Which Physiologic Alteration of the Uterus During Pregnancy Is

Of which physiologic alteration of the uterus during pregnancy is it important for the nurse to alert the patient?

A) Lightening occurs near the end of the second trimester as the uterus rises into a different position.
B) Woman's increased urinary frequency in the first trimester is the result of exaggerated uterine anti-reflexion caused by softening.
C) Braxton Hicks contractions become more painful in the third trimester,particularly if the woman tries to exercise.
D) Uterine souffle is the movement of the fetus.