Blood group antigens are carbohydrates that are attached to proteins or lipids on the surface of RBC. Therefore there is ABO blood group system shows the four major blood groups determined by the presence or absence of two antigens and on the surface of red blood cells.
Group A - has only the A antigen on red cells.
Group B - has only the B antigen on red cells.
Group AB - has both A and B antigens on red cells.
Group O - has neither A nor B antigens on red cells.

Hence option c is correct.

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