Find the Product, AB, If Possible A) $\left[ \begin{array} { r r } 12 & 0 \\ 0 & 12 \end{array} \right]$

Multiple Choice

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

A) $\left[ \begin{array} { r r } 12 & 0 \\ 0 & 12 \end{array} \right]$

B) $A B$ is not defined.

C) $\left[ \begin{array} { r r r } 12 & - 8 & 4 \\ - 6 & 16 & - 11 \end{array} \right]$

D) $\left[ \begin{array} { r r } 12 & - 6 \\ - 8 & 16 \\ 4 & - 11 \end{array} \right]$