Find the Product AB, If Possible A) $\left[ \begin{array} { r r r } 3 & - 7 & 2 \\ 6 & - 20 & 16 \end{array} \right]$

Multiple Choice

Find the product AB, if possible.
- $\mathrm { A } = \left[ \begin{array} { r r } - 1 & 3 \\ 1 & 6 \end{array} \right] , \mathrm { B } = \left[ \begin{array} { l l l } 0 & - 2 & 4 \\ 1 & - 3 & 2 \end{array} \right]$

A) $\left[ \begin{array} { r r r } 3 & - 7 & 2 \\ 6 & - 20 & 16 \end{array} \right]$
B) $\mathrm { AB }$ is not defined.
C)
$\left[ \begin{array} { r r } 3 & 6 \\ - 7 & - 20 \\ 2 & 16 \end{array} \right]$
D)
$\left[ \begin{array} { r r r } 0 & - 6 & 12 \\ 1 & - 18 & 12 \end{array} \right]$