Determine if the series converges absolutely, converges, or diverges for 18. Please explain 19 in great detail.

18) E (- 9)-n Provide an appropriate response. 19) For an alternating series n =1 00 A) diverges E (-1) n+1 un where it is not true that un 2 B) converges absolutely n=1 C) converges conditionally Un+1 for sufficiently large n, what can be said about the convergence or divergence of the series? A) The series always converges. B) The series always diverges. C) The series may or may not converge