What is the smallest positive integer x such that 450x is the cube of a positive integer?	Choose the correct choice from the following answers
A) 2
B) 15
C) 30
D) 60
E) 120
450 = 2 x 3^2 x 5^2 now we need two 2s, one 3 and one 5 to make it perfect cube.   So x= 2^2 x 3 x 5 = 60.   Answer is 30.
<result>C</result>
What is the smallest positive integer x such that 450x is the cube of a positive integer?