Simplify

2017

Simplify

Answer: D. Z = Ā(B + C) + D̄

1. A.

   Z = Ā + BC + D̄

2. B.

   Z = ĀB + CD̄

3. C.

   Z = A(B + C̄) + D

4. D.

   Z = Ā(B + C) + D̄

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Correct answer: D