Consider the transplantation of tissue from a donor to a recipient who has a different HLA type but the same ABO blood type. Why will the recipient be likely to reject a kidney from the donor, but will not reject the blood from the donor?
a) The recipient's immune system recognizes Class I MHC molecules on the kidney cells.
b) The recipient's immune system recognizes Class II MHC molecules on the kidney cells.
c) There are no Class I MHC molecules on the red blood cells in the donor blood.
d) There are no Class II MHC molecules on the red blood cells in the donor blood.