Determine Whether Any of the Lines Given Below Are Parallel

Multiple Choice

Determine whether any of the lines given below are parallel or identical. $\begin{array} { l } L _ { 1 } : \quad x = - 8 - 4 t , y = 6 - 6 t , z = - 7 - 2 t \\L _ { 2 } : \quad x = - 4 + 4 t , y = 12 + 6 t , z = - 5 + 2 t \\L _ { 3 } : \quad x = 4 t , y = 2 - 6 t , z = 1 + 2 t \\L _ { 4 } : \quad x = - 4 - 4 t , y = 12 - 6 t , z = - 5 - 2 t\end{array}$

A) $L _ { 2 } , L _ { 3 }$ are identical
B) $L _ { 1 } , L _ { 2 } , L _ { 4 }$ are identical
C) $L _ { 1 } , L _ { 2 }$ are identical
D) $L _ { 1 } , L _ { 4 }$ are parallel
E) $L _ { 1 } , L _ { 3 }$ are parallel