The right answer for the question that is being asked and shown above is that: "B. To show the audience that he believed that Boniface deserved to be in Hell as well" In Canto XIX of the Inferno, Pope Nicholas III mistakes Dante for Pope Boniface VIII. Most likely the author's purpose in this scene is to show the audience that he believed that Boniface deserved to be in Hell as well. I hope this satisfied your query.
