1.

The switching expression corresponding to f(A, B, C, D) = Σ (1, 4, 5, 9, 11, 12) is

A. BC'D' + A'C'D + AB'D
B. ABC' + ACD + B'C'D
C. ACD' + A'BC' + AC'D'
D. A'BD + ACD' + BCD'
Answer» B. ABC' + ACD + B'C'D


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