Why Is Warfarin (Coumadin)avoided During Pregnancy

Why is warfarin (Coumadin) avoided during pregnancy?

A) Warfarin can induce premature closure of the foramen ovale in the fetus.
B) The fetal and newborn liver cannot metabolize warfarin and anemia results.
C) The fetus and newborn are more likely to have allergic reactions to warfarin.
D) Warfarin crosses the placenta and causes birth defects or hemorrhage in the fetus.