Final answer:
A person with blood group AB can only donate blood to another person with blood group AB. They carry both A and B antigens and have no anti-A or anti-B antibodies, making them universal recipients but limiting their ability to donate to others.
Step-by-step explanation:
A person who carries blood group AB can only donate blood to a person who also carries blood group AB. Individuals with blood group AB have both A and B antigens on their red blood cells, and because they do not produce anti-A or anti-B antibodies, they are considered universal recipients. However, these same antigens can elicit an immune response if their blood is donated to people with other blood types (A, B, or O), who may have antibodies to antigens that are not present in their own blood type.