A nurse is preparing to administer medications to four clients. The nurse should administer medications to which of the following clients first?

A client who has pneumonia, a WBC count of 11,500/mm3, and is prescribed piperacillin.

A client who has anemia, hemoglobin of 11 g/dl, and is prescribed epoetin alfa

A client who has renal failure, a serum potassium of 5.8/mEq/L, and is prescribed sodium polystyrene sulfonate

A client who is post-coronary artery bypass graft (CABG), has total cholesterol of 318 mg/dL, and is prescribed atorvastatin