If the System Has Infinitely Many Solutions, Write the Solution $$\begin{array} { l } 2 x + 6 y - z = - 2 \\4 x - y + 2 z = 1 \\- 4 x - 12 y + 2 z = 0\end{array}$$

Multiple Choice

If the system has infinitely many solutions, write the solution set with x arbitrary.
- $$\begin{array} { l } 2 x + 6 y - z = - 2 \\4 x - y + 2 z = 1 \\- 4 x - 12 y + 2 z = 0\end{array}$$

A) $\left\{ \left[ x , - \frac { 1 } { 3 } - \frac { 1 } { 3 } x , - 2 - 2 x \right) \right\}$
B) $\varnothing$
C) $\{ ( 0,0 ) \}$
D) $\left\{ \left\{ x , \frac { 1 } { 2 } - 2 x , 4 x - 1 \right) \right\}$