GATE2017: 20

Question

$\text{A}$ and $\text{B}$ are the logical inputs and $\text{X}$ is the logical output shown in the figure. The output  $\text{X}$ is related to $\text{A}$ and $\text{B}$ by 

• A. $X=\overline{A}B+\overline{B}A$
• B. $X=AB+\overline{B}A$
• C. $X=AB+\overline{A}$ $\overline{B}$
• D. $X=\overline{A}$ $\overline{B}+\overline{B}A$