Problem: nitin ' s age was equal to square of some number last year and the following year it would be cube of a number . if again nitin ' s age has to be equal to the cube of some number , then for how long he will have to wait ? 
Options: ['a ) 10 years', 'b ) 38 years', 'c ) 39 years', 'd ) 64 years', 'e ) 44 years']
b