Solve the System of Equations A) $( - 1,1,1 )$ B) $( 0,0,1 )$

Multiple Choice

Solve the system of equations.
- $$\begin{array} { l } 7 x _ { 1 } + 7 x _ { 2 } + x _ { 3 } = 1 \\x _ { 1 } + 8 x _ { 2 } + 8 x _ { 3 } = 8 \\9 x _ { 1 } + x _ { 2 } + 9 x _ { 3 } = 9\end{array}$$

A) $( - 1,1,1 )$
B) $( 0,0,1 )$
C) $( 1 , - 1,1 )$
D) $( 0,1,0 )$