Which of the Statements Below Is an Incorrect or False

Which of the statements below is an incorrect or false statement?

A) Unique to the ABO blood group is the presence in the plasma of preformed antibodies.
B) Transfusion of incompatible blood can be fatal.
C) When a transfusion reaction occurs,the oxygen- carrying capacity of the transfused blood cells is disrupted and the clumping of RBCs in small vessels hinders blood flow to tissues beyond those points.
D) Blood typing for the Kell,Lewis,and Duffy factors is always done before a blood transfusion.