What does Cinderella learn when talking with her sisters after the ball?

A: Her sisters pretended to be asleep when Cinderella got back from the ball.

B: Her sisters did not recognize that the beautiful princess at the ball was Cinderella.

C: Her sisters are going to let Cinderella borrow a yellow dress for the ball the next day.

D: Her sisters left all of their oranges and citrons at the ball.