PLEASE HELP ASAP WILL GIVE 30 POINTS

Find the domain for the rational function f(x) = x/x-5
A. (−∞, 0) (0, ∞)
B. (−∞, 1) (1, ∞)
C. (−∞, 5) (5, ∞)
D. (−∞, −5) (−5, ∞)