Simplify the Expression, Using Only Positive Exponents in Your Answer $\frac{x^{-2}-64 y^{-2}}{5 y-40 x}$

Multiple Choice

Simplify the expression, using only positive exponents in your answer.
- $\frac{x^{-2}-64 y^{-2}}{5 y-40 x}$

A) $\frac{y^{2}+8 x}{5 x^{2}}$

B) $5 x-40 y^{2}$

C) $\frac{x+8 y}{5 x^{2} y}$

D) $\frac{y+8 x}{5 x^{2} y^{2}}$