People who have type O blood are considered ________ because they ________
A) universal recipients : have no antibodies to A or B
B) universal recipients : have no A or B antigens
C) universalists : cannot receive blood transfusions
D) universal donors : have no A or B antigens
E) universal donors : have no antibodies to A or B
Ans: D) universal donors : have no A or B antigens
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