Use Back-Substitution to Solve the System of Linear Equations $\left\{ \begin{array} { c c } x - y + 2 z & = 22 \\3 y - 8 z & = - 9 \\z & = - 9\end{array} \right.$

Multiple Choice

Use back-substitution to solve the system of linear equations. $\left\{ \begin{array} { c c } x - y + 2 z & = 22 \\3 y - 8 z & = - 9 \\z & = - 9\end{array} \right.$

A) $( - 13 , - 27 , - 9 )$
B) $( 13 , - 27 , - 9 )$
C) $( - 13,27 , - 9 )$
D) $( 13 , - 27,9 )$
E) $( 13,27 , - 9 )$