61.一位70歲男性最近被診斷出多發性骨髓瘤IgG型，其檢驗報告如下，total protein 12 g/dL，albumin 3.3 g/dL，globulin 8.7 g/dL，IgG 7.42 g/dL，serum protein electrophoresis顯示46.2％的單一paraprotein波峰，請問其Mprotein濃度為多少？
(A)5.544 g/dL
(B)4.019 g/dL
(C)3.428 g/dL
(D)1.525 g/dL