Solve the System of Equations Using Cramer's Rule $\begin{array}{l}\mathrm{x} \quad+\mathrm{y} \quad+\mathrm{z}=10,000 \\x \quad-z=-500 \\\end{array}$

Multiple Choice

Solve the system of equations using Cramer's rule.
- $\begin{array}{l}\mathrm{x} \quad+\mathrm{y} \quad+\mathrm{z}=10,000 \\x \quad-z=-500 \\\end{array}$
$0.03 x+0.05 y-0.07 z=20$

A) $(3000,3000,4000)$
B) $(2500,4000,3500)$
C) $(3500,3500,4000)$
D) $(3000,3500,3500)$