(A + (AB)' )' = (A + A' + B')' = (1+B')' = (1)' = 0
A.
(B + (AB)')' = (B + A' + B')' = (1 + A')' = (1)' = 0
B.
(A' + A'B)' = (A' (1+B)' = (A')' = A
C.
(B' + B'A)' = (B' (1+A)' = (B')' = B
D.
(B' + (BA)')' = (B' + B' + A')'=(B' (1 + A’))' = (B')' = B
答案是A。根据逻辑运算规则：(AB)' = A' + B' ，A + A' = 1，（1 + X）= 1 ，X，任意数。
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