Each option below lists three expressions. Which option lists expressions that are not equivalent?


A) 81^3/4 ; 27 ; ^4square root of81^3


B) 8 ; ^4square root of16^3 ; 16^.75


C) (625^.25)^3 ; (625^3)^1/4 ; 125


D) 256 ; 1,296^3/4 ; ^4square root of1,296^3