Amniocentesis Has Suggested That a Couple's First Child Will Be

Amniocentesis has suggested that a couple's first child will be born with sickle cell disease. The parents are unfamiliar with the health problem, and their caregiver is explaining the complexities. Which of the following statements by the parents would suggest a need for further teaching or clarification?

A) "Our baby's red cells are prone to early destruction because of his or her weak membranes."
B) "Not all of his or her red cells will be sickled, but low oxygen levels can cause them to become so."
C) "Sickled cells can block his or her blood vessels, especially in the abdomen, chest, and bones."
D) "Our son or daughter likely won't show the effects of sickling until he or she is school-aged because of the different hemoglobin in babies."