Differences in human blood types show how genetic differences have evolved over time, affecting red blood cell structure. What is the basis for blood type classifications?
a. It is based on antigens made of carbohydrates, specifically glycoside and N-acetylglucosamine, found on the surface of red blood cells.
b. It is based on antigens made of proteins, specifically glycolipids and glycoproteins, found on the surface of red blood cells.
c. It is based on antigens made of proteins, specifically peripheral and integral proteins, found on the surface of the red blood cell.
d. It is based on antigens made of lipids, specifically glycerophospholipids, found on the surface of red blood cells.