Simplify the Expression $\left(\frac{-3 w^{5}}{x}\right)^{4}$ A) $\frac{81 w^{9}}{x^{4}}$ B) $\frac{-81 w^{20}}{x^{4}}$ C) $\frac{-81 w^{20}}{x}$

Multiple Choice

Simplify the expression. Write your answer with only positive exponents. Assume that all variables represent nonzero real numbers.
- $\left(\frac{-3 w^{5}}{x}\right) ^{4}$

A) $\frac{81 w^{9}}{x^{4}}$

B) $\frac{-81 w^{20}}{x^{4}}$

C) $\frac{-81 w^{20}}{x}$

D) $\frac{81 w^{20}}{x^{4}}$