Find the Matrix Product When Possible $\left[ \begin{array} { r r } 3 & - 2 \\ 6 & 0 \end{array} \right] \left[ \begin{array} { r r } 0 & - 2 \\ 2 & 6 \end{array} \right]$

Multiple Choice

Find the matrix product when possible.
- $\left[ \begin{array} { r r } 3 & - 2 \\ 6 & 0 \end{array} \right] \left[ \begin{array} { r r } 0 & - 2 \\ 2 & 6 \end{array} \right]$

A)
$\left[\begin{array}{rr}-4 & -18 \\0 & -12\end{array}\right]$
B)
$\left[\begin{array}{rr}-12 & 0 \\42 & -4\end{array}\right]$
C)
$\left[\begin{array}{rr}0 & 4 \\12 & 0\end{array}\right]$
D)
$\left[\begin{array}{rr}-18 & -4 \\-12 & 0\end{array}\right]$