Solve the system of equations.

3x+4y+3z=9
3x+3y+3z=3
2x+4y+3z=8

A) (x=2, y=5, z=-7)
B) (x=1, y=6, z=-6)
C) (x=0, y=4, z=-5)
D) (x=3, y=4,z=-4)