Respuesta :

Answer:

Because it causes complications with the person and the blood

Explanation:

Answer: I hope this helps you plz give me a brainiest

Explanation:

That means people with type A blood create antibodies against B antigens. A person with type A blood receiving a transfusion of type B or AB blood would have an ABO incompatibility reaction. In an ABO incompatibility reaction, your immune system attacks the new blood cells and destroys them.