Question

Antibody common to blood group $O^{-}$ and individual with blood group $B^{+}$ is /are

• A. Anti-B
• B. Anti-A
• C. Both Anti-B and Anti-A
• D. Anti-RH

Answer 1

The correct option is B Anti-A

The correct answer is B.

Anti-B antibody would attack blood cells that contain B antigen. Group B: The surface of the red blood cells contains B antigen, and the plasma has anti-A antibody. Anti-A antibody would attack blood cells that contain A antigen. So B+ has antibody anti-A.