5. 圖(二)所示之電路,其輸出的布林函數Y=F(A,B,C)為下列何者?(A)Y=Σ (2,3,4,6) (B)Y=Σ (2,4,5,6) (C)Y=Σ (2,4,6,7) (D)Y= Σ(2,3,5,6)