Hemolytic disease of the newborn may result if
A) the mother is Rh positive and the father is Rh negative.
B) both the father and the mother are Rh negative.
C) both the father and the mother are Rh positive.
D) an Rh-negative mother carries an Rh-positive fetus.
E) an Rh-positive mother carries an Rh-negative fetus.
Answer: D
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