Robby Cheated on a Math Test by Stealing the Answers

Robby cheated on a math test by stealing the answers from the teacher's desk. The teacher realizes that someone stole the answers out of her desk. She asks the other students in her fourth-grade math class if they know who did it. Several of them stand up and announce to the class that they saw Robby take the answers from her desk. According to Kohlberg's theory, at what stage of morality are these children most likely to be functioning?

A) Heteronomous morality
B) Individualism, purpose, and exchange
C) Interpersonal expectations, relationships, and interpersonal conformity
D) Social systems morality