1. What is the main function of RBCs? 2. What surface antigens does Type A blood have? 3. Describe what would happen if type A blood were transfused into the bloodstream of someone with type B blood. 4. A person has antibody A and antibody B in his or her blood, with no Rh antibody. What blood type does this person have? 5. Could a man with AB blood be the father to a child with O blood? Why?.