A Client in the Third Trimester Has Just Undergone an Amniocentesis

A client in the third trimester has just undergone an amniocentesis to determine fetal lung maturity.Which statement regarding this testing is important for the nurse in formulating a care plan?

A) Because of new imaging techniques,an amniocentesis should have been performed in the first trimester.
B) Despite the use of ultrasonography,complications still occur in the mother or infant in 5% to 10% of cases.
C) Administration of Rh_o(D) immunoglobulin may be necessary.
D) The presence of meconium in the amniotic fluid is always a cause for concern.