Solve the System Using Gaussian Elimination or Gauss-Jordan Elimination $$\begin{array} { l } 5 x + 9 z = - 16 + 6 y \\8 x = 7 y + 7 z - 141 \\8 z = - 2 y - 2 x + 42\end{array}$$

Multiple Choice

Solve the system using Gaussian elimination or Gauss-Jordan elimination.
- $$\begin{array} { l } 5 x + 9 z = - 16 + 6 y \\8 x = 7 y + 7 z - 141 \\8 z = - 2 y - 2 x + 42\end{array}$$

A) $\{ ( 5 , - 8,6 ) \}$
B) $\{ ( 5,8 , - 6 ) \}$
C) $\{ ( 8 , - 5,6 ) \}$
D) $\{ ( - 8,5,6 ) \}$