Solve the System, If Possible $\left\{ \begin{array} { l l } x + y + z & = - 20 \\2 x + y + z & = - 30 \\5 x + y - z & = - 46\end{array} \right.$

Multiple Choice

Solve the system, if possible. $\left\{ \begin{array} { l l } x + y + z & = - 20 \\2 x + y + z & = - 30 \\5 x + y - z & = - 46\end{array} \right.$

A) x = -10, y = -3, z = -7
B) x = 10, y = 3, z = 7
C) x = -2, y = -10, z = 7
D) x = -13, y = -6, z = 7
E) no solution; inconsistent system