A 26-year-old Rh-negative woman at 10 weeks' gestation presents with vaginal bleeding from a threatened miscarriage. Ultrasound shows a viable intrauterine pregnancy. What is the most appropriate recommendation regarding anti-D immunoglobulin?AIt is not required at this gestationBAdminister anti-D immunoglobulin because of first-trimester bleedingCAdminister anti-D only after 28 weeksDAdminister anti-D only if she undergoes caesarean sectionEAnti-D is unnecessary in Rh-negative womenCheck my answer