Practice IC Fabrication Techniques - GATE & ESE

IC Fabrication Techniques

Which of the following expressions represents De-Morgan’s theorem?

$true$

$A+\bar{A} B=A+B$

$\overline{A+B}=\bar{A} \bar{B}$

$A B+\bar{A} C+B C=A B+\bar{A} C$