A Nursing Student Is Assigned to Care for a Child

A nursing student is assigned to care for a child with sickle cell disease (SCD) . The nursing instructor asks the student to describe the causative factors related to this disease. Which of the following statements, if made by the student, indicates a need for further research?

A) SCD is an autosomal recessive disease.
B) If each parent carries the trait, the children will inherit the trait.
C) Children with the HbS (sickle cell hemoglobin) trait are not symptomatic.
D) If one parent has the HbS trait and the other parent is normal, there is a 50% chance that each offspring will inherit the trait.