2.一位24歲女性，過去無病史。約2個月前開始注意出現水腫，體重在2個月內增加8公斤。實驗室檢查: Albumin 2.8 g/dL, creatinine 0.8 mg/dL, t-Chol 280 mg/dL, LDL 163 mg/dL, urine protein-creatinine (P/C) ratio 約9 mg/mg, urinalysis O.B.(-), serum [K] 4 mEq/L, [Ca] 9.2 mg/dL, Hb 12 g/dL。本病人的診斷，最可能為?
(A)IgA nephropathy
(B)minimal change disease
(C)multiple myeloma with nephropathy
(D)systemic lupus erythromatous (SLE) with nephropathy
(E)membranoproliferative glomerulonephritis (MPGN)