Which of the logic expressions is equivalent to the digital circuit shown in the figure?

Which of the logic expressions is equivalent to the digital circuit shown in the figure?

a) X = A.B + A̅.B̅
b) X = A + B
c) X = A.B̄ + Ā.B
d) X = (Ā + B).(A + B̄)

From the Rupali Bank Assistant Network Engineer 2021 – Written (CTI) exam, question 34 of 46.

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