104. The output( X) of the logic circuit shown in figure will be ?

104. The output( X) of the logic circuit shown in figure will be ?

(a)  \(X = \overline{A \cdot B}\)

(b)  \(X = A \cdot B\)

(c)  \(X = \overline{A + B}\)

(d)  \(X = \overline{A} + \overline{B}\)

Answer :  (b)  \(X = A \cdot B\)

\( \overline{\overline{A \cdot B}} = A \cdot B \)