Answer:
The answer to your question is C.
Explanation:
Blood is classified according to the kind of antigens it has, there are 4 types of blood.
Group A is a type of blood that only has the A antigen in red cells
Group B is the type of cell that only has the B antigen in red cells
Group AB has both antigens A and B in red cells.
Group O has no antigens in blood cells.
