Complement of the expression A’B + CD’ is

1.	Complement of the expression A’B + CD’ is
A.	(a’ + b)(c’ + d)
B.	(a + b’)(c’ + d)
C.	(a’ + b)(c’ + d)
D.	(a + b’)(c + d’)
Answer» C. (a’ + b)(c’ + d)

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