Find the Inverse of the Matrix $\left[ \begin{array} { l l l } 1 & 5 & 2 \\0 & 1 & 5 \\0 & 0 & 1\end{array} \right]$

Find the inverse of the matrix.
$\left[ \begin{array} { l l l } 1 & 5 & 2 \\0 & 1 & 5 \\0 & 0 & 1\end{array} \right]$

A) $\left[ \begin{array} { c c c } 1 & 5 & - 23 \\0 & 1 & 5 \\0 & 0 & 1\end{array} \right]$
B) $\left[ \begin{array} { c c c } - 1 & - 5 & 23 \\0 & - 1 & - 5 \\0 & 0 & - 1\end{array} \right]$
C) $\left[ \begin{array} { c c c } 1 & - 5 & - 23 \\0 & 1 & - 5 \\0 & 0 & 1\end{array} \right]$
D) $\left[ \begin{array} { l l l } 1 & 5 & 23 \\0 & 1 & 5 \\0 & 0 & 1\end{array} \right]$
E) $\left[ \begin{array} { c c c } 1 & - 5 & 23 \\0 & 1 & - 5 \\0 & 0 & 1\end{array} \right]$