Find the Indicated Matrix Product or State That the Product

Find the indicated matrix product or state that the product is undefined.
- $$A = \left[ \begin{array} { l l l l } 0 & 0 & 1 & 0 \\0 & 0 & 0 & 1 \\1 & 0 & 0 & 0 \\0 & 1 & 0 & 0\end{array} \right] , B = \left[ \begin{array} { r r r r } - 5 & 9 & 6 & 4 \\8 & 4 & 9 & 8 \\7 & - 1 & 5 & 0 \\0 & - 2 & 4 & - 1\end{array} \right]$$
BA

A)
$$\left[ \begin{array} { r r r r } 0 & 0 & 6 & 0 \\0 & 0 & 0 & 8 \\7 & 0 & 0 & 0 \\0 & - 2 & 0 & 0\end{array} \right]$$
B)
$\left[\begin{array}{rrrr}7 & -1 & 5 & 0 \\0 & -2 & 4 & -1 \\-5 & 9 & 6 & 4 \\8 & 4 & 9 & 8\end{array}\right]$
C)
$\left[\begin{array}{rrrr}6 & 4 & -5 & 9 \\9 & 8 & 8 & 4 \\5 & 0 & 7 & -1 \\4 & -1 & 0 & -2\end{array}\right]$
D)
$\left[\begin{array}{rrrr}-5 & 9 & 6 & 4 \\8 & 4 & 9 & 8 \\7 & -1 & 5 & 0 \\0 & -2 & 4 & -1\end{array}\right]$