The dialect intensifies some stereotypes and thereby separates the character from the narrator.
Explanation:
The story of “The Notorious Jumping Frog of Calaveras County” is a Mark Twain's short story in which the narrator speaks about a visit he made to a friend. The reason why Twain decides to use dialect when wheeler tells the story is to emphiseze and exagerate his qualities and to separate the narrator from the story.
I can't speak for the italics because they aren't showing up here, but "B. Who painted "Starry
<span> Night," Van Gogh or Cezanne?</span>" is correct. So is D if the title of the book is italics.