The nurse is administering sodium polystyrene sulfonate to a client in acute kidney injury (AKI). Which laboratory finding indicates that the medication has been effective?Reference Range:• Glucose: 74 to 106 mg/dL (4.1 to 5.9 mmol/L)• Hemoglobin: 14 to 18 g/dL (140 to 180 g/L)• Potassium: 3.5 to 5 mEq/L (3.5 to 5 mmol/L)• Ammonia: 10 to 80 µg/dL (6 to 47 µmol/dL)