Why would a person have anti-Rh antibodies present in their blood?
A. They are Rh-positive and were exposed to Rh-negative blood.
B. An Rh-negative woman is carrying an Rh-positive fetus.
C. An Rh-positive woman is carrying an Rh-negative fetus.
D. A person can not have anti-Rh antibodies in their blood.
B
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Fill in the blank(s) with correct word
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