Solve the System of Equations Below by the Gaussian Elimination $8 x - 6 y - 8 z = 28$

Multiple Choice

Solve the system of equations below by the Gaussian elimination method. $8 x - 6 y - 8 z = 28$ $- 7 x - 4 y + 7 z = - 43$ $- 3 x + 3 y + 3 z = - 9$

A) $( 5 c + 2,1 , c )$
B) $( c + 2,5 , c )$
C) $( c + 5,2 , c )$
D) $( 5 c + 1,2 , c )$
E) no solution