Solve the System of Equations Below $- 6 x + y + 7 z = 20$

Multiple Choice

Solve the system of equations below: $- 6 x + y + 7 z = 20$ $7 x - 2 y - 9 z = - 25$

A) $( - c - 3 , c + 2 , c )$
B) $( c - 3 , - c + 2 , c )$
C) $( c + 2 , - c - 3 , c )$
D) $( - c + 2 , c - 3 , c )$
E) $( - 3 c + 2 , c - 1 , c )$