If f(x)=x^3 and x is a natural number what CANNOT be a solution to f(x)? Pick:
A) 1	B) 8	C) 27	D) 36	E) 64
36 is not a perfect cube. The answer is 36.
<result>D</result>
If f(x)=x^3 and x is a natural number what CANNOT be a solution to f(x)?