"I say," Sis Alligator say, "where you goin to?" Now Bruh Gator see there's no gettin around Sis Alligator, so he has to tell, say, "I'm goin aroun with Bruh Rabbit."

"What for you goin aroun with Bruh Rabbit?" quizzit Sis Alligator.

Bruh Gator dint want say, but he have to so he tell her, say, "I am goin for to meet Trouble."

"What Trouble is?" asked Sis Alligator.

—“Bruh Alligator and Bruh Deer,”
Virginia Hamilton

How can readers tell from this passage that these two characters belong to the same setting?

They are both alligators.
They both know Bruh Rabbit.
They speak using the same dialect.
They are brother and sister.