$M=\left[\begin{array}{rr}2 & -7 \\-1 & 5\end{array}\right]$ হলে $\mathrm {M}^{-1}=$ কত?

$\left[\begin{array}{ll}5 & 7 \\1 & 2\end{array}\right]$

$\frac{1}{3}\left[\begin{array}{ll}2 & 7 \\1 & 5\end{array}\right]$

$\frac{1}{17}\left[\begin{array}{ll}5 & 7 \\1 & 2\end{array}\right]$

$\frac{1}{3}\left[\begin{array}{ll}5 & 7 \\1 & 2\end{array}\right]$