A nurse is assisting with a prenatal class and a learner asks the nurse to explain what happens during a prolapsed umbilical cord. Which of the following statements should the nurse make?

An occult cord prolapse occurs when the umbilical cord is hidden within the vagina.

An occult prolapsed cord occurs when the umbilical cord is wrapped around the fetal neck.

A compound prolapsed cord occurs when the cord is felt through the cervix inside the intact amniotic sac.

An overt prolapsed cord occurs when the umbilical cord comes through the cervix ahead of the presenting part.