A Patient with Chronic Renal Failure Receives Hemodialysis Treatments 3

A patient with chronic renal failure receives hemodialysis treatments 3 days a week.Every 2 weeks, the patient requires a transfusion of 1 or 2 U of packed red blood cells.What is the probable reason for this patient's frequent transfusion needs?

A) Too much blood phlebotomized for tests
B) Increased destruction of red blood cells because of the increased toxin levels
C) Lack of production of erythropoietin to stimulate red blood cell formation
D) Fluid retention causing hemodilution