Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
Divide
- $\frac{-20 x^{10}-40 x^{7}}{-5 x^{4}}$

A) $4 x^{6}-40 x^{7}$
B) $4 x^{6}+8 x^{3}$
C) $-20 x^{10}+8 x^{3}$
D) $12 x^{13}$