Which excerpt below best summarizes the theme of “The Cask of Amontillado”?

A)“A wrong is unredressed when retribution overtakes its redresser. It is equally unredressed when the avenger fails to make himself felt as such to him who has done the wrong.”
B)“Against the new masonry I reerected the old rampart of bones. For the half of a century no mortal has disturbed them.”
C)"Come," I said, with decision, we will go back; your health is precious. You are rich, respected, admired, beloved; you are happy as once I was.”
D)“I broke and reached him a flagon of De Grave. He emptied it at a breath. His eyes flashed with a fierce light.”

A) “A wrong is unredressed when retribution overtakes its redresser. It is equally unredressed when the avenger fails to make himself felt as such to him who has done the wrong.”

Explanation:

The short story "The Cask of Amontillado" by Edgar Allen Poe is a revenge story of Montresor against his 'friend' Fortunato. This revenge murder is a culmination of the many instances of insult and injuries that Montresor thinks Fortunato had done to him.

The story begins during a carnival where Montresor lures his victim Frtunato for a wine tasting, the very famous Amontillado wine. And as expected of him, Fortunato excitedly follows him, and ended up being left in a built-in wall in the corner. Fifty years later, Montresor reveals that the bones of Fortunato are still there chained to the wall where he was left in the first place. This whole story and plot is best summarized by the phrase-

“A wrong is unredressed when retribution overtakes its redresser. It is equally unredressed when the avenger fails to make himself felt as such to him who has done the wrong.”