Anti-A, anti-B and anti-Rh antibodies can be found in the blood plasma of which of the following blood types?

O negative individuals can have antibodies against both A and B blood groups because their red blood cells (RBCs) do not have any A or B antigens on their surfaces.

Antibodies against the Rh factor are not naturally present in the plasma of any blood group. However, these antibodies can be produced in the plasma of a person with a negative blood group when they are exposed to Rh-positive blood, such as during a blood transfusion from an Rh-positive donor to an Rh-negative recipient.