9.某54歲女性，有尿毒症狀(creatinine 4.0 mg/dL)、貧血(Hct 8.5 g/dL)、倦怠、夜尿(nocturia)，實驗室檢查有metabolic acidosis，輕度蛋白尿(＜1.0 g/day)，尿液中有WBC cast, granular cast, pyuria及glycosuria。病人腎病變最可能的原因為:
(A)Aristolochic acid nephropathy (Chinese herbal nephropathy)
(B)Focal segmental glomerulosclerosis (FSGS)
(C)Membranoproliferative glomerulonephritis (MPGN)
(D)IgA nephropathy
(E)ADPKD (autosomal dominant polycystic kidney disease)