Which one of the following is equivalent to the Boolean expression Y =

1.	Which one of the following is equivalent to the Boolean expression Y = AB + BC + CA ?
A.	(AB + BC + CA)'
B.	((A' + B')(B' + C')(C' + A'))'
C.	(A' + B')(B' + C')(C' + A')
D.	((A + B)(B + C)(C + A)'
Answer» C. (A' + B')(B' + C')(C' + A')

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