Find the Inverse of the Matrix (If It Exists) $$\left[ \begin{array} { l l } 6 & - 7 \\7 & - 8\end{array} \right]$$

Multiple Choice

Find the inverse of the matrix (if it exists) .​ $$\left[ \begin{array} { l l } 6 & - 7 \\7 & - 8\end{array} \right]$$ ​

A) ​ $$\left[ \begin{array} { c c } - 8 & 7 \\7 & 6\end{array} \right]$$
B) ​ $$\left[ \begin{array} { c c } - 8 & 7 \\- 7 & 6\end{array} \right]$$
C) ​ $$\left[ \begin{array} { c c } - 8 & - 7 \\- 7 & 6\end{array} \right]$$
D) ​ $$\left[ \begin{array} { c c } - 8 & 7 \\7 & - 6\end{array} \right]$$
E) ​ $$\left[ \begin{array} { c c } - 8 & - 7 \\7 & 6\end{array} \right]$$