Task: Question Answering
Input (English): Question: If y>x>0, which of the following must be true:
I. x^2>y^2
II. x^3 > y^3
III. |x|<y

 Option A: I only

 Option B: II only

 Option C: III only

 Option D: II and III

 Option E: I, II and III
Output (English): Option C