Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
Find all real numbers excluded from the domain of the function. Then give the domain, using set builder notation.
- $f(x) =\frac{x^{2}-5 x}{x^{2}-4 x-45}$

A) $-9,5 ;\{x \mid x \neq-9,5\}$
B) $-5,9 ;\{x \mid x \neq-5,9\}$
C) $-5,5 ;\{x \mid x \neq-5,5\}$
D) 0, $5 ;\{x \mid x \neq 0,5\}$