Find the Inverse of the Invertible Matrix $$\left[ \begin{array} { l l } 2 & - 1 \\0 & - 3\end{array} \right]$$

Multiple Choice

Find the inverse of the invertible matrix.
- $$\left[ \begin{array} { l l } 2 & - 1 \\0 & - 3\end{array} \right]$$

A) $\left[ \begin{array} { c c } \frac { 1 } { 2 } & \frac { 1 } { 6 } \\ 0 & - \frac { 1 } { 3 } \end{array} \right]$
B) $\left[ \begin{array} { c c } 0 & - \frac { 1 } { 3 } \\ \frac { 1 } { 2 } & - \frac { 1 } { 6 } \end{array} \right]$
C) $\left[ \begin{array} { r r } - \frac { 1 } { 3 } & - \frac { 1 } { 6 } \\ 0 & \frac { 1 } { 2 } \end{array} \right]$
D) $\left[ \begin{array} { l l } \frac { 1 } { 2 } & - \frac { 1 } { 6 } \\ 0 & - \frac { 1 } { 3 } \end{array} \right]$