Task: Question Answering
Input (English): Question: If f(x) = -*5 (x^4 - 1)/(x^2), what is f(1/x) in terms of f(x)?

 Option A: f(x

 Option B: -f(x

 Option C: 1/f(x

 Option D: 5f(x

 Option E: 2*f(x
Output (English): Option D