The Mother of a Postterm Infant Asks the Nurse Why

The mother of a postterm infant asks the nurse why the baby is being watched so closely. The nurse answers that postterm infants are at risk because:

A) The placenta does not function adequately as it ages.
B) Infants born postmaturely are generally large.
C) Delivery of the postterm infant is more difficult.
D) There is less amniotic fluid.