Find the Indicated Matrix $A = \left[ \begin{array} { r r r } 1 & 3 & - 2 \\ 3 & 0 & 5 \end{array} \right]$

Multiple Choice

Find the indicated matrix.
-Let $A = \left[ \begin{array} { r r r } 1 & 3 & - 2 \\ 3 & 0 & 5 \end{array} \right]$ and $B = \left[ \begin{array} { r r } 3 & 0 \\ - 2 & 1 \\ 0 & 5 \end{array} \right]$ . Find $A B$ .

A) $\left[ \begin{array} { r r } - 7 & - 3 \\ 25 & 9 \end{array} \right]$
B) $\left[ \begin{array} { r r r } 3 & - 6 & 0 \\ 0 & 0 & 25 \end{array} \right]$
C) not defined
D) $\left[ \begin{array} { r r } - 3 & - 7 \\ 9 & 25 \end{array} \right]$