Select the correct inference of the given passage from “The Cask of Amontillado.”

“Against the new masonry I re-erected the old rampart of bones. For the half of a century no mortal has disturbed them. In pace requiescat!”

AMontresor spent fifty years building the wall.
BFortunato has never been found.
CMontresor buried all of the old bones.
DFortunato has been sleeping for fifty years.