How are mild allergic transfusion reactions with isolated symptoms or hives and urticaria treated?..

How are mild allergic transfusion
reactions with isolated symptoms or hives and urticaria treated?

a. Transfusion is stopped and
transfusion reaction workup is initiated b. Transfusion is stopped and
antihistamines administrated; when symptoms improve, transfusion is restarted
c. Stop transfusion and prepare washed red blood cells d. Continue transfusion
with a slower infusion rate