Factor Completely $\mathrm{x}^{2}-\mathrm{x}-45$ A) $(x-5)(x+9)$ B) $(x-45)(x+1)$ C) $(x+5)(x-9)$ D) Prime

Factor completely.
- $\mathrm{x}^{2}-\mathrm{x}-45$

A) $(x-5) (x+9)$
B) $(x-45) (x+1)$
C) $(x+5) (x-9)$
D) Prime