A Child Who Has Polycythemia Is Prescribed Radiation

A child who has polycythemia is prescribed radiation.The child's parents ask why this is necessary since the child does not have cancer.Which response by the nurse is accurate?

A) "It stimulates red blood cell production."
B) "It suppresses the bone marrow."
C) "It provides vitamin supplementation."
D) "It decreases the risk of transfusion reactions."