Perform Row Operations on the Augmented Matrix as Far as Necessary

Multiple Choice

Perform row operations on the augmented matrix as far as necessary to determine whether the system is independent,dependent, or inconsistent.
- $-x-y-z=-6$
$x+y+z=0$
$\mathrm{x}+\mathrm{y}-\mathrm{z}=4$

A) Dependent
B) Independent
C) Inconsistent