Question

A person with AB blood group cannot donate blood to a person with B blood group because:

• A. patient has antibodies b
• B. patient lacks antibodies b
• C. patient lacks antibodies a
• D. patient has antibodies a

Answer 1

The correct option is A

patient has antibodies b

A person with blood group AB has A and B antigens. A person with B blood group produces anti-A antibodies which will act against the A antigens of AB blood group and cause agglutination, which can be fatal for the recipient.