Find the Indicated Matrix Product or State That the Product

Multiple Choice

Find the indicated matrix product or state that the product is undefined.
- $$A = \left[ \begin{array} { l } - 1 \\- 8 \\- 6\end{array} \right] , B = \left[ \begin{array} { r r r } 4 & - 8 & 2 \\8 & 8 & - 7\end{array} \right]$$
$\mathrm { AB }$

A)
$\left[\begin{array}{rrr}-4 & 8 & -2 \\-64 & -64 & 56\end{array}\right]$
B)
$\left[\begin{array}{r}48 \\-30\end{array}\right]$
C)
$\left[\begin{array}{ll}48 & -30\end{array}\right]$
D) Undefined