Correct option is A
Given :
n = any natural number
Solution :
Let take n = 1 then :
(n3 - n) = 0
take n = 2 then :
(n3 - n) = 8 - 2 = 6
take n = 3 then :
(n3 - n) = 27 - 3 = 24
From above results we can say that the greatest number is 6 by which (n3 - n) is always divisble if n is any natural number.
Hence the correct answer is "6".