Perform the Indicated Operation and Express in Lowest Terms $\frac{125 x^{3}+125 x^{2} y}{25 x^{2}+50 x y+25 y^{2}}-\frac{125 x y^{2}+125 y^{3}}{25 x^{2}+50 x y+25 y^{2}}$

Multiple Choice

Perform the indicated operation and express in lowest terms.
- $\frac{125 x^{3}+125 x^{2} y}{25 x^{2}+50 x y+25 y^{2}}-\frac{125 x y^{2}+125 y^{3}}{25 x^{2}+50 x y+25 y^{2}}$

A) $\frac{x-y}{25 x^{2}+25 x y+25 y^{2}}$

B) $5 y-5 x$

C) $\frac{5 x^{2}-5 y^{2}}{5 x+5 y}$

D) $5 x-5 y$