A nurse is reviewing laboratory findings for four clients. Which of the following clients has manifestations of untreated chronic kidney disease?

A Potassium 3.3 mEq/L. hemoglobin 14.1 g/dL, creatinine 0.8 mg/dL B BUN 5 mg/dL, potassium 4.8 mEq/L, creatinine 0.9 mg/dL D Potassium 4.5 mEq/L, BUN 18 mg/dL, creatinine 1.1 mg/dL C Potassium 5.4 mEq/L. hemoglobin 9.8 g/dL, creatinine 4.6 mg/dl.