Use an Inverse Matrix to Find the Solution to the System

Multiple Choice

Use an inverse matrix to find the solution to the system.
- $$\left\{ \begin{array} { l } - 3 x - 7 y - 2 z = - 43 \\- 9 x + 6 y + 5 z = 2 \\- 5 x - 7 y + 5 z = - 4\end{array} \right.$$

A) $x = 5 , y = 2 , z = 7$
B) $x = 2 , y = 7 , z = 2$
C) $x = 6 , y = 0 , z = 7$
D) $x = 5 , y = - 2 , z = - 7$