Simplify the Expression Involving Rational Exponents $\left(-\frac{64}{125}\right)^{-4 / 3}$ A) $\frac{256}{625}$ B) $-\frac{256}{625}$

Multiple Choice

Simplify the expression involving rational exponents.
- $\left(-\frac{64}{125}\right) ^{-4 / 3}$

A) $\frac{256}{625}$

B) $-\frac{256}{625}$

C) $\frac{625}{256}$

D) Not a real number