11.一位60歲DM及慢性腎臟病(chronic kidney disease)病人，三週前的AC血糖是160 mg/dL，HbA1C是8.2%，creatinine 2.0 mg/dL。四天前開始有咳嗽、接著有喘、呼吸困難、尿量減少，因此住院。住院時: WBC 12,500/mm3, Hct 28%, BUN 78 mg/dL, creatinine 2.8 mg/dL, AC 190 mg/dL. 胸部X-光檢查有右下葉病灶。動脈血液氣體檢查(ABG): pH 7.22, PO2 92 mm Hg, PCO2 32 mm Hg, HCO3- 10 mEq/L, BE -15 mEq/L. 從病史與ABG資料來看，以下最適合的診斷?
(A)Simple metabolic acidosis, with well compensation
(B)Simple respiratory acidosis, with well compensation
(C)Metabolic acidosis + respiratory acidosis
(D)Metabolic acidosis + respiratory alkalosis
(E)Respiratory acidosis + metabolic alkalosis