Use an Inverse Matrix to Find the Solution to the System

Multiple Choice

Use an inverse matrix to find the solution to the system.
- $$\left\{ \begin{array} { c } - 5 x - y - 7 z = - 35 \\- 6 x + 6 z = - 12 \\5 y + z = 7\end{array} \right.$$

A) $x = - 4 , y = 8 , z = 1$
B) $x = 4 , y = 1 , z = 2$
C) $x = 4 , y = 2 , z = 1$
D) $x = - 4 , y = 1 , z = 8$