If Sn represents the sum of the squares of the first n natural numbers, use proof by induction to find which of the following expressions for Sn is true?
A) Sn = n(n − 1)/3
B) Sn = n(2n − 1)/3
C) Sn = n(n + 1)/3
D) Sn = n(n + 1)(2n + 1)/3
D
If for no other reason, the sum of nth powers will be a polynomial of degree n+1.