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.
- $$\begin{array} { l } \frac { 1 } { x } + \frac { 1 } { y } + \frac { 1 } { z } = - 1 \\\frac { 1 } { x } - \frac { 1 } { y } + \frac { 6 } { z } = - \frac { 10 } { 3 } \\\frac { 1 } { x } + \frac { 1 } { y } + \frac { 1 } { z } = - 1\end{array}$$

A) $\{ ( - 1,3,3 ) \}$
B) $\left\{ \left\{ - 1 , \frac { 1 } { 3 } , - \frac { 1 } { 3 } \right) \right\}$
C) $\{ ( 1 , - 3 , - 3 ) \}$
D) $\{ ( - 1,3 , - 3 ) \}$