Simplify the Complex Fraction $\frac{\frac{x^{2}-5 x-14}{x^{2}-16 x+63}}{\frac{x^{2}+4 x-5}{x^{2}+2 x-3}}$ A) $\frac{(\mathrm{x}+2)(\mathrm{x}-5)}{(\mathrm{x}-7)(\mathrm{x}+9)}$ B) $\frac{\mathrm{x}-7}{\mathrm{x}-1}$

Multiple Choice

Simplify the complex fraction.
- $\frac{\frac{x^{2}-5 x-14}{x^{2}-16 x+63}}{\frac{x^{2}+4 x-5}{x^{2}+2 x-3}}$

A) $\frac{(\mathrm{x}+2) (\mathrm{x}-5) }{(\mathrm{x}-7) (\mathrm{x}+9) }$

B) $\frac{\mathrm{x}-7}{\mathrm{x}-1}$

C) $\frac{(x-2) (x+5) }{(x+7) (x-9) }$

D) $\frac{(\mathrm{x}+2) (\mathrm{x}+3) }{(\mathrm{x}+5) (\mathrm{x}-9) }$