When a Blood Test Was Performed on Cindy's Fetus, the Doctors

Multiple Choice

When a blood test was performed on Cindy's fetus, the doctors found some of Cindy's red blood cells in the fetus's circulatory system.We know that this most likely:

A) is normal because the mother's red blood cells are shared with the fetus.
B) indicates a problem with the blastocyst, which should not contain red blood cells.
C) indicates a problem with the placenta, which should block the mother's red blood cells.
D) indicates a problem with the amnion, which should eliminate the mother's red blood cells.