A Newborn Who Is 24 Hours Old Is Suspected of Having

A newborn who is 24 hours old is suspected of having cystic fibrosis. As the child is being prepared for transfer to a pediatric hospital, the mother asks the nurse what symptoms made the physician suspect cystic fibrosis. The nurse would reply that the clinical manifestation of cystic fibrosis that is seen first is:

A) Rectal prolapse.
B) Constipation.
C) Steatorrheic stools.
D) Meconium ileus.