If (x)^(1/5) > (x)^(1/3), then how many of the following statements are definitely true about x?
I. x^(2) > x^(3) 
II. x^(1/3) > x^(4) 
III. x^(1/3) > x^(–3) 
IV. x^(–1/3) > x^(3)

a)  1
b)  2 
c)  3
d)  4