$A=\left[\begin{array}{ll}2 & 3 \\4 & 1\end{array}\right]$ হলে $\operatorname{adj}(A)=\text { ? }$

$\left[\begin{array}{ll}1 & 3 \\4 & 2\end{array}\right]$

$\left[\begin{array}{ll}2 & 4 \\3 & 1\end{array}\right]$

$\left[\begin{array}{cc}1 & -3 \\-4 & 2\end{array}\right]$

$\left[\begin{array}{cc}-1 & 3 \\4 & -2\end{array}\right]$