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Question 1
The switching expression corresponding to $f(A,B,C,D) = \Sigma(1,4,5,9,11,12)$ is:
A.
$B\bar{C}\bar{D} + \bar{A}CD + A\bar{B}D$
B.
$AB\bar{C} + ACD + \bar{B}\bar{C}D$
C.
$AC\bar{D} + \bar{A}BC + A\bar{C}D$
D.
$\bar{A}BC + ACD + BC\bar{D}$
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