Question

what antibody do people with type ab blood produce?
a they do not produce either anti - a or anti - b antibodies.
b anti - o antibodies
c anti - a antibodies
d anti - b antibodies

Explanation:

Blood type AB has both A and B antigens on red blood cells. Antibodies are proteins that attack foreign antigens. Since AB blood already has A and B antigens, it doesn't produce anti - A or anti - B antibodies (which would attack its own antigens). There is no such thing as anti - O antibodies (as O blood has no A or B antigens, but the question is about AB blood). And producing anti - A or anti - B antibodies would be self - destructive for AB blood.

Answer:

A. They do not produce either anti - A or anti - B antibodies.