The domain of function fis (-∞, 6) U (6,∞). The value of the
function approaches -∞ as x approaches -∞, and the value
of the function approaches ∞ as x approaches ∞. Which
function could be function f?
A.f(x)=x^2-36/x-6
B.f(x)=x-6/x^2-36
C.f(x)=x+6/x-6
D.f(x)=x-6/x+6