Read this excerpt from "Wiley, His Mama, and the Hairy Man” in The People Could Fly Now, facts are facts. Wiley was a boy. He and his mama lived by themselves with just Wiley’s dogs.

What makes this excerpt part of the exposition of the story?

It describes the setting of the story.
It introduces the main character.
It states the main conflict of the story.
It tells about the antagonist of the story.