Which of the following is the most appropriate pharmacotherapy for this patient?
A 50-year-old man with a long-standing history of type 2 diabetes mellitus comes to the physician because of several fainting episodes and fatigue during the past month. He appears chronically ill. His temperature is 37Â°C (98.6Â°F), pulse is 95/min, respirations are 17/min, and blood pressure is 155/95mm Hg. Physical examination shows pallor. Laboratory studies show:\n Hemoglobin 8 g/dL\n Hematocrit 24%\n Mean corpuscular hemoglobin 30 pg/cell\n Mean corpuscular hemoglobin concentration 33% Hb/cell\n Mean corpuscular volume 85 um3\n Leukocyte count 8000/mm3\n Platelet count 200,000/mm3\n SERUM\n Urea nitrogen 60 mg/dL\n Creatinine 6 mg/dL\n Total bilirubin 0.9 mg/dL\n \n
A. Cyclosporine\n B. Deferoxamine\n C. Erythropoietin\n D. Filgrastim\n E. Folic acid\n F. Oprelvekin\n G. Vitamin B12 (cyanocobalamin)\n