An Augmented Matrix That Represents a System of Linear Equations

Multiple Choice

An augmented matrix that represents a system of linear equations (in variables x,y,z and w if applicable) has been reduced using Gauss-Jordan elimination.Find the solution represented by the augmented matrix.​ $\left[\begin{array}{l}{\begin{array}{cccc}1 & 0 & 0 & \vdots-3\end{array}} \\\begin{array}{llll}0 & 1 & 0 & \vdots-9\end{array} \\\begin{array}{llll}0 & 0 & 1 & \vdots3\end{array} \\\end{array}\right]$ ​

A) ​(-3,9,3)
B) (3,-9,3)
C) (-3,-9,3)
D) (-3,-9,-3)
E) (-3,3,-9)