Solve the System of Equations A) $( 2 , - 7 , - 1 )$

Multiple Choice

Solve the system of equations.
- $$\begin{aligned}4 x _ { 1 } - x _ { 2 } + 3 x _ { 3 } & = 12 \\2 x _ { 1 } + 9 x _ { 3 } & = - 5 \\x _ { 1 } + 4 x _ { 2 } + 6 x _ { 3 } & = - 32\end{aligned}$$

A) $( 2 , - 7 , - 1 )$
B) $( 2,7 , - 1 )$
C) $( 2,7,1 )$
D) $( 2 , - 7,1 )$