Letk=1ak be the following infinite series, and{s_n} the corresponding sequence of partial sums. 1 + 1/2 + 1/2 + 1/3 + 1/3 + 1/3 + 1/4 + 1/4 + 1/4 + 1/4 + 1/5...

Choose the correct statement(s).

limkak=0

limnsn=0

{a_k} is a convergent sequence.

The series n=1an converges.

{s_n} is a divergent sequence.