Simplify the Expression So That No Negative Exponents Appear in the Final

Multiple Choice

Simplify the expression so that no negative exponents appear in the final result. Assume all variables represent nonzero numbers.
- $\left(7^{2} \cdot 4^{5}\right) ^{-5}$

A) $7^{7} \cdot 4^{7}$

B) $7^{10} \cdot 4^{25}$

C) $\frac{1}{7^{7} \cdot 4^{7}}$

D) $\frac{1}{7^{10} \cdot 4^{25}}$