If f(x) =4* (x^4 - 1)/(x^2), what is f(1/x) in terms of f(x)?
Choose the correct choice from the following answers:
A) f(x)
B) -f(x)
C) -4*f(x)
D) -1/f(x)
E) 2*f(x)
4*f(1/x) = 4*((1/x)^4 - 1) / ((1/x)^2)   = 4*((1/x^4) - 1) / (1/x^2)   = 4*((1-x^4)/(x^4)) / (1/x^2)   =4* (1-x^4)/(x^2)   = - 4*( (x^4) -1) / (x^2)   = -4f(x)   Answer is -4*f(x).
<result>C</result>
If f(x) =4* (x^4 - 1)/(x^2), what is f(1/x) in terms of f(x)?