The correct answer is A. Poe uses rhyme to create an optimistic mood.
Explanation:
As we see the poem talks about different sorts of bells. And there is one bell that refers to the bearers of good luck and it is the bell of the weddings. So, good luck is most likely to be optimistic and that sense Poe uses rhyme to create an optimistic mood.
Poe uses rhyme to create a nostalgic mood. Most of Poes works are dark and mysterious. There are a few that are nostalgic, so based upon this, Im going with nostalgia.