During a First-Trimester Prenatal Examination,a Pregnant Group A,D-Negative Woman Had

During a first-trimester prenatal examination,a pregnant group A,D-negative woman had an anti-D titer of 8.What is the most likely course of action?

A) The anti-D is probably from prenatal Rh immune globulin; another dose should be given at birth.
B) Repeat the titer in 4 weeks to determine if significant rise in titer is detected.
C) The pregnancy is considered high risk, and the mother should be followed up immediately with amniocentesis or percutaneous umbilical cord testing.
D) None of the above is correct.