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

Multiple Choice

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) ​ $$\left[ \begin{array} { c c c } 1 & - 5 & 23 \\0 & 1 & - 5 \\0 & 0 & 1\end{array} \right]$$