For Sn given by the following formulas, determine the convergence or divergence of the sequence (Sn). Find any limits that exist:

A) Sn = ( (-1)^n / (n+3) )

B) Sn = ( 2^(3n) / 3^(2n) )

C) Sn = ( (3+n-n^2) / (1+2n) )

D) Sn = 3^n / (n^3 + 5)

E) Sn = n! / (n^n)

F) Sn = (n^2) / n!