Solve the System by Using the Inverse of the Coefficient $$\begin{array} { c } 4 x + 4 y - z = 16 \\x - 8 y - 6 z = - 28 \\- 6 x + y + z = - 19\end{array}$$

Multiple Choice

Solve the system by using the inverse of the coefficient matrix.
- $$\begin{array} { c } 4 x + 4 y - z = 16 \\x - 8 y - 6 z = - 28 \\- 6 x + y + z = - 19\end{array}$$

A) $\varnothing$
B) $\{ ( - 4,1,8 ) \}$
C) $\{ ( 4,4,1 ) \}$
D) $\{ ( 4,1,4 ) \}$