$A=\left[\begin{array}{rr}8 & -5 \\-6 & 4\end{array}\right]$ হলে $A^{-1}=$ কত ?

$-\frac{1}{2}\left[\begin{array}{ll}4 & 5 \\6 & 8\end{array}\right]$

$\frac{1}{2}\left[\begin{array}{ll}8 & 5 \\6 & 4\end{array}\right]$

$\frac{1}{2}\left[\begin{array}{ll}4 & 5 \\6 & 8\end{array}\right]$

$\frac{1}{2}\left[\begin{array}{rr}4 & -6 \\-5 & 8\end{array}\right]$