Solve the System by Using the Inverse of the Coefficient $$\begin{array} { c } 9 x - 5 y - z = 39 \\x + 7 y + 2 z = 56 \\3 x + y + z = 33\end{array}$$

Multiple Choice

Solve the system by using the inverse of the coefficient matrix.
- $$\begin{array} { c } 9 x - 5 y - z = 39 \\x + 7 y + 2 z = 56 \\3 x + y + z = 33\end{array}$$

A) $\varnothing$
B) $\{ ( - 8,6,16 ) \}$
C) $\{ ( 8,6,3 ) \}$
D) $\{ ( 8,3,6 ) \}$