Q19. The output $( Y )$ of logic circuit given below is 0 only when :\\
\includegraphics[max width=\textwidth, alt={}, center]{f7e1c4e5-0331-437e-a40e-6cb0fe232d21-03_321_944_1740_233}\\
(1) $\mathrm { A } = 1 , \mathrm {~B} = 0$\\
(2) $\mathrm { A } = 0 , \mathrm {~B} = 1$\\
(3) $\mathrm { A } = 0 , \mathrm {~B} = 0$\\
(4) $\mathrm { A } = 1 , \mathrm {~B} = 1$