Blood of AB group cannot be given to B group patient because

Options

A. patient has antibodies b
B. patient lacks antibodies b
C. patient lacks antibodies a
D. patient has antibodies a

Answer

D

Explanation

Persons with blood group B have B antigen on the surface of their RBCs and anti A antibodies (against A antigen) in their plasma. The person with AB blood group possesses both the antigens A and B on the surface of RBCs. If AB blood group is given to B group patient, agglutination occurs between anti A antibodies and A antigen.