If n and y are positive integers and 450y = n^3, which of the following must be an integer?

I. y/((3)(2^2)(5))
II. y/((3^2)(2)(5))
III. y/((3)(2)(5^2))

A. None
B. I only
C. II only
D. III only
E. I, II, and III



Thanks,
Cappy