A woman is in the family planning clinic seeking birth control information. She states that her breasts "change all month long" and that she is worried that this is unusual. What is the best response by the nurse?

A) "Continual changes in your breasts are unusual. The breasts of nonpregnant women usually stay pretty much the same all month long."
B) "Breast changes in response to stress are very common and you should assess your life for stressful events."
C) "Because of the changing hormones during the monthly menstrual cycle, cyclic breast changes are common."
D) "Breast changes normally occur only during pregnancy. You should get a pregnancy test done as soon as possible."