In Poe’s “The Cask of Amontillado” , which of the following makes Montresor an unreliable narrator?

He is part of a secret association.

He makes exaggerated claims about Fortunato.

He does not offer any possible reason for wanting to murder Fortunato.

3 answers

He makes exaggerated claims about Fortunato.
are you very sure
Yes, I am sure. Montresor's exaggerated claims about Fortunato's expertise in wines and his exaggerated flattery towards him suggest that he may not be completely honest in his narration. This adds to his unreliability as a narrator.