If ${\mathrm{B}}^{+\mathrm{ve}}$ blood is transfused to an ${\mathrm{O}}^{+\mathrm{ve}}$ patient accidentally, what might happen?

• A

  The donor’s antibodies will attack the patient’s RBC.

• B

  The patient’s anti-A antibodies will attack the donated RBC.

• C

  Nothing will happen because both donor and recipient lack anti-Rh antibodies.

• D

  The patient’s anti-B antibodies will attack the donated RBC.