Solve the System of Equations A) $( 1,4,2 )$ B) $( 1,2,4 )$

Multiple Choice

Solve the system of equations.
- $$\begin{array} { l } x _ { 1 } + x _ { 2 } + x _ { 3 } = 7 \\x _ { 1 } - x _ { 2 } + 2 x _ { 3 } = 7 \\5 x _ { 1 } + x _ { 2 } + x _ { 3 } = 11\end{array}$$

A) $( 1,4,2 )$
B) $( 1,2,4 )$
C) $( 4,1,2 )$
D) $( 4,2,1 )$