Find $A B$ $A = \left[ \begin{array} { l l } - 8 & 4 \\- 4 & 7\end{array} \right]$

Find $A B$ $A = \left[ \begin{array} { l l } - 8 & 4 \\- 4 & 7\end{array} \right]$ $B = \left[ \begin{array} { c c } - 4 & - 2 \\4 & - 4\end{array} \right]$

A) $\left[ \begin{array} { c c } 4 & 0 \\- 46 & 24\end{array} \right]$
B) $\left[ \begin{array} { c c } 40 & - 16 \\- 30 & - 12\end{array} \right]$
C) $\left[ \begin{array} { c c } 16 & 32 \\12 & - 36\end{array} \right]$
D) $\left[ \begin{array} { c c } 24 & - 48 \\2 & - 44\end{array} \right]$
E) $\left[ \begin{array} { c c } 48 & 0 \\44 & - 20\end{array} \right]$