Find the Matrix Product When Possible $\left[ \begin{array} { r r } 0 & - 1 \\ 3 & 1 \end{array} \right] \left[ \begin{array} { l l } - 2 & 0 \\ - 1 & 1 \end{array} \right]$

Find the matrix product when possible.
- $\left[ \begin{array} { r r } 0 & - 1 \\ 3 & 1 \end{array} \right] \left[ \begin{array} { l l } - 2 & 0 \\ - 1 & 1 \end{array} \right]$

A)
$\left[ \begin{array} { r r } 0 & 2 \\ - 3 & 1 \end{array} \right]$
B)
$\left[ \begin{array} { r r } - 1 & 1 \\ - 5 & - 7 \end{array} \right]$
C)
$\left[ \begin{array} { r r } - 6 & - 2 \\ 3 & 2 \end{array} \right]$
D)
$\left[ \begin{array} { r r } 1 & - 1 \\ - 7 & 1 \end{array} \right]$