Respuesta :
1st.: Letter A. Mounted upon.
Although the literal meaning of 'surmounted' is the answers of options B and C, it's not the meaning that it carries in the given context.
2nd.: Letter B.
Although apparently narrating a friendly encounter between Montresor and Fortunato, this excerpt is actually narrating the moment in which one (Montresor) meets the other (Fortunato) with the intention to murder him, in order to 'avenge Fortunato's insults' towards him.
3rd.: Letter D. grotesque.
Grotesque is a synonym of 'bizarre', 'freak'.