If the System Has Infinitely Many Solutions, Write the Solution

Multiple Choice

If the system has infinitely many solutions, write the solution set with x arbitrary.
- $$\begin{array} { l } \frac { 2 } { x } - \frac { 1 } { y } - \frac { 2 } { z } = - \frac { 53 } { 20 } \\- \frac { 1 } { x } + \frac { 3 } { y } + \frac { 7 } { z } = \frac { 63 } { 20 } \\\frac { 3 } { x } - \frac { 1 } { y } - \frac { 1 } { z } = - \frac { 69 } { 20 }\end{array}$$

A) $\left\{ \left( - 1 , \frac { 1 } { 4 } , - \frac { 1 } { 5 } \right) \right\}$

B) $\{ ( - 1,4 , - 5 ) \}$

C) $\{ ( - 1,4,5 ) \}$

D) $\left\{ \left( - 1 , \frac { 1 } { 4 } , \frac { 1 } { 5 } \right) \right\}$