How Is Hemolytic Disease of the Newborn Prevented

How is hemolytic disease of the newborn prevented?

A) immunizing a woman against Rh factor prior to pregnancy
B) administering anti-IgG antibodies during pregnancy
C) treating with cytokines to prevent B cell activation late in pregnancy
D) administering anti-Rh IgG late in pregnancy and after pregnancy ends
E) treating with glucocorticoids throughout pregnancy