A) are either Rh+Rh+ or Rh+Rh-.
B) are either Rh+Rh+ or Rh-Rh-.
C) must be Rh-Rh-.
D) do not have the Rh blood group antigen on their blood cells.
E) are none of these.

A) 1
B) 6
C) 21
D) X
E) Y

A) the recipient's immune system will make antibodies against the donor antigens.
B) the donated blood cells will form clumps.
C) large amounts of hemoglobin will be released from damaged RBCs.
D) it can lead to kidney failure in the recipient.
E) there will be no problem as long as the Rh factors match.