A 30-year-old Rh-negative primigravida at 28 weeks' gestation has a partner who is Rh-positive. She has had no bleeding episodes or procedures during pregnancy. What is the appropriate prophylaxis?ANo prophylaxis required if this is the first pregnancyBAdminister anti-D immune globulin now and again within 72 hours postpartum if the infant is Rh-positiveCAdminister anti-D only after deliveryDAdminister daily anti-D injections until deliveryEAdminister anti-D only if she develops vaginal bleedingCheck my answer