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

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

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

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