What does “Rhesus positive” refer to? A. The presence of antigen D on the surface of red blood cells B. The final factor involved in blood clotting C. The presence of the rhesus antibody/agglutinin in the blood D. A deficiency of Factor VIII that results in haemophilia
Option A. "Rhesus positive" refers to the presence of antigen D on the surface of red blood cells. There are two types of Rh factor i.e. Rh+ve and Rh-ve.
