Solve the System of Four Equations in Four Unknowns Using $9 w+8 x-5 y-4 z=19$

Multiple Choice

Solve the system of four equations in four unknowns using matrices.
- $9 w+8 x-5 y-4 z=19$
$8 w+6 x-8 y-4 z=-2$
$9 \mathrm{w}-8 \mathrm{x}+6 \mathrm{y}+5 \mathrm{z}=-35$
$-5 \mathrm{w}-4 \mathrm{x}+8 \mathrm{y}+9 \mathrm{z}=-1$

A) $(1,5,4,2)$
B) $(-1,5,4,-2)$
C) $(-1,4,-5,2)$
D) $\varnothing$