Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
-Let $\mathrm { A } = \left[ \begin{array} { r r } - 2 & 3 \\ 3 & 2 \end{array} \right]$ and $\mathrm { B } = \left[ \begin{array} { l l } - 2 & 0 \\ - 1 & 3 \end{array} \right]$ . Find $\mathrm { AB }$ .

A) $\left[ \begin{array} { r r } 9 & 1 \\ 6 & - 8 \end{array} \right]$

B) $\left[ \begin{array} { r r } 1 & 9 \\ - 8 & 6 \end{array} \right]$

C) $\left[ \begin{array} { r r } 4 & 0 \\ - 3 & 6 \end{array} \right]$

D) $\left[ \begin{array} { r r } 4 & - 6 \\ - 4 & 3 \end{array} \right]$