What antibody type does a person with blood type B have?

A person with blood type B has anti-A antibodies in their serum. This is due to the ABO blood group system, which is based on the presence or absence of antigens on the surface of red blood cells. Individuals with blood type B possess B antigens on their red blood cells, and to prevent an immune response against those antigens, their immune system produces anti-A antibodies. These antibodies specifically target the A antigen, which is why type B individuals cannot receive type A blood without risking a transfusion reaction.

The presence of anti-B antibodies is not a characteristic of blood type B individuals; instead, those antibodies would be found in individuals with blood type A. The lack of antibodies in option D does not accurately describe blood type B, as they do produce anti-A antibodies. Therefore, the correct answer highlights the specific immune response that characterizes individuals with blood type B.