Answer:
I believe that this expression would be classified as hyperbole.
Explanation:
It is a hyperbole because it's a stretch from the truth, they (being "we") didn't actually walk a hundred miles.
Well, just the fact that the characters are all dressed up for a masquerade party, already adds to the eerie mood. But what really seals the coffin is when Montressor lures Fortunato into the catacombs, and then ties him up. You really get the whole creepo-vibe, when Montressor starts to seal up the "tomb". Hope this helps you a lot.
The answer would be B, as symbols can have different meanings based on culture and interpretation. Have a nice day! :)