Simplify the Complex Fraction $\frac{\frac{x^{2}-81}{x^{2}+16 x+63}}{\frac{x^{2}+3 x-28}{x^{2}+2 x-35}}$ A) $\frac{(x+7)(x-5)}{n(x)}$ B) $\frac{(x+9)(x-5)}{2 x}$

Simplify the complex fraction.
- $\frac{\frac{x^{2}-81}{x^{2}+16 x+63}}{\frac{x^{2}+3 x-28}{x^{2}+2 x-35}}$

A) $\frac{(x+7) (x-5) }{n(x) }$

B) $\frac{(x+9) (x-5) }{2 x}$

C) $\frac{(x-9) (x+5) }{(-9 x}$

D) $\frac{(x-9) (x-5) }{2 n}$