Solve the System $\left(\begin{array}{rll}x+2 y-5 z & = & -20 \\3 y-z & = & -1 \\3 y+3 z & = & 15\end{array}\right)$

Multiple Choice

Solve the system. $\left(\begin{array}{rll}x+2 y-5 z & = & -20 \\3 y-z & = & -1 \\3 y+3 z & = & 15\end{array}\right)$

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