?Determine Which One of the Ordered Triples Below Is a Solution

Multiple Choice

?Determine which one of the ordered triples below is a solution of the given system of equations. $$\left\{ \begin{array} { l l } 5 x + 7 y - 7 z & = 11 \\2 x - 3 y - z & = - 18 \\3 x - 4 y + z & = - 41\end{array} \right.$$

A) ? $( - 2 , - 4 , - 6 )$
B) ? $( - 2 , - 4 , - 7 )$
C) ? $( - 6,2 , - 9 )$
D) ? $( - 9,2 , - 6 )$
E) ? $( 2,6,9 )$