While Providing a Hospital Tour,the Perinatal Nurse Shows the Compact

While providing a hospital tour,the perinatal nurse shows the compact disc player stored in the birthing room.The nurse explains that music is encouraged during labor because it does which of the following?

A) Decreases the production of catecholamines
B) Increases maternal distraction
C) Increases maternal oxygen demands
D) Increases the production of endorphins
E) Increases the woman's ability to focus