Four NOR gates are connected as shown in figure. The truth table for the given figure is :

• A

  $\begin{array}{ccc}\mathrm{A}& \mathrm{B}& \mathrm{Y}\\ 0& 0& 1\\ 0& 1& 0\\ 1& 0& 1\\ 1& 1& 0\end{array}$
• B

  $\begin{array}{ccc}\mathrm{A}& \mathrm{B}& \mathrm{Y}\\ 0& 0& 0\\ 0& 1& 1\\ 1& 0& 1\\ 1& 1& 0\end{array}$
• Correct answer
  C

  $\begin{array}{ccc}\mathrm{A}& \mathrm{B}& \mathrm{Y}\\ 0& 0& 1\\ 0& 1& 0\\ 1& 0& 0\\ 1& 1& 1\end{array}$
• D

  $\begin{array}{ccc}\mathrm{A}& \mathrm{B}& \mathrm{Y}\\ 0& 0& 0\\ 0& 1& 1\\ 1& 0& 0\\ 1& 1& 1\end{array}$

Hence, the correct answer is option: 'C'.