Compute:
A) $\left[\begin{array}{ll}3 & -4 \\ 7 & -9 \\ -1 & -2\end{array}\right]$

Compute:

A) $\left[\begin{array}{ll}3 & -4 \\ 7 & -9 \\ -1 & -2\end{array}\right]$
B) $\left[\begin{array}{cc}9 & 0 \\ 19 & -19 \\ -3 & -2\end{array}\right]$
C) $\left[\begin{array}{ll}-3 & -8 \\ -5 & 1 \\ 1 & -2\end{array}\right]$
D) $\left[\begin{array}{ll}-9 & -12 \\ -17 & 11 \\ 3 & -2\end{array}\right]$