Write the System of Equations Associated with the Augmented Matrix $$\left[ \begin{array} { r r r | r } 8 & 8 & - 8 & 7 \\6 & 6 & 0 & 9 \\3 & 0 & - 4 & - 6\end{array} \right]$$

Multiple Choice

Write the system of equations associated with the augmented matrix. Do not solve.
- $$\left[ \begin{array} { r r r | r } 8 & 8 & - 8 & 7 \\6 & 6 & 0 & 9 \\3 & 0 & - 4 & - 6\end{array} \right]$$

A)
$$\left\{ \begin{array} { l } 8 x + 8 y - 8 z = 7 \\6 x + 6 y = 9 \\3 x - 4 y = - 6\end{array} \right.$$
B)
$$\left\{ \begin{array} { r } 8 x + 8 y - 8 z = 7 \\6 x + 6 y = 9 \\3 x - 4 z = - 6\end{array} \right.$$
C)
$$\left\{ \begin{array} { l } 8 x + 8 y - 8 z = 7 \\6 x + 6 y + 9 z = 0 \\3 x - 4 y - 6 z = 0\end{array} \right.$$
D)
$$\left\{ \begin{aligned}8 x + 8 y - 8 z & = 7 \\6 x + 6 z & = 9 \\3 x - 4 y & = - 6\end{aligned} \right.$$