The output of the circuit is low (zero) for :
(A) $\mathrm{X}=0, \mathrm{Y}=0$ (B) $X=0, Y=1$ (C) $X=1, Y=0$ (D) $\mathrm{X}=1, \mathrm{Y}=1$ Choose the correct answer from the options given below :

• Correct answer
  A

  (B), (C) and (D) only
• B

  (A), (B) and (C) only
• C

  (A), (C) and (D) only
• D

  (A), (B) and (D) only

Solution

$\begin{array}{c|c|c} x & y & \\ \hline 0 & 0 & 1 \\ 0 & 1 & 0 \\ 1 & 0 & 0 \\ 1 & 1 & 0 \end{array}$

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