An Older Adult Patient with Renal Failure Is Diagnosed with Anemia

An older adult patient with renal failure is diagnosed with anemia. Based on this data, which cause of anemia will the nurse include in the plan?

A) Loss of the kidney hormone erythropoietin
B) A loss of appetite related to elevated blood urea nitrogen (BUN) and creatinine levels
C) The renal dialysis used to treat the chronic renal failure
D) Loss of blood through the urine because the failing kidney does not function properly