Solve the System of Linear Equations $$\begin{array} { r r } x + y + z & = 7 \\x - y + 2 z & = 7 \\2 x + 3 z & = 14\end{array}$$

Multiple Choice

Solve the system of linear equations. If the system has infinitely many solutions, describe the solution with an ordered triple in terms of variable z.
- $$\begin{array} { r r } x + y + z & = 7 \\x - y + 2 z & = 7 \\2 x + 3 z & = 14\end{array}$$

A) $\left( - \frac { 3 z } { 2 } - 7,2 z , z \right)$
B) $\left( - \frac { 3 z } { 2 } + 7 , \frac { z } { 2 } , z \right)$
C) $\left( - \frac { 3 z } { 2 } - 7 , \frac { z } { 2 } , z \right)$
D) $\left( - \frac { 3 z } { 2 } + 7,2 z , z \right)$