Solve the System of Equations $$\begin{aligned}x _ { 1 } + 3 x _ { 2 } + 2 x _ { 3 } & = 11 \\4 x _ { 2 } + 9 x _ { 3 } & = - 12 \\x _ { 3 } & = - 4\end{aligned}$$

Multiple Choice

Solve the system of equations.
- $$\begin{aligned}x _ { 1 } + 3 x _ { 2 } + 2 x _ { 3 } & = 11 \\4 x _ { 2 } + 9 x _ { 3 } & = - 12 \\x _ { 3 } & = - 4\end{aligned}$$

A) $( 1 , - 4,6 )$
B) $( - 4,6,1 )$
C) $( 1,6 , - 4 )$
D) $( - 4,1,6 )$