Solve the System by Using the Inverse of the Coefficient $$\begin{array} { l } - 4 x - y - 9 z = - 69 \\- 5 x + 7 y + 5 z = 36 \\- 9 x - 5 y + z = - 36\end{array}$$

Multiple Choice

Solve the system by using the inverse of the coefficient matrix.
- $$\begin{array} { l } - 4 x - y - 9 z = - 69 \\- 5 x + 7 y + 5 z = 36 \\- 9 x - 5 y + z = - 36\end{array}$$

A) $\{ ( - 3,3,6 ) \}$
B) $\varnothing$
C) $\{ ( 3,6,3 ) \}$
D) $\{ ( 3,3,6 ) \}$