Which Statement Indicates a Higher Level of Morality as Classified

Which statement indicates a higher level of morality as classified in Kohlberg's moral development theory?

A) "I shouldn't lie because I may get caught."
B) "I shouldn't cheat because cheating is against the rules."
C) "I shouldn't lie because lying is not good."
D) "I shouldn't steal because my mother said it's wrong to steal."
E) "I shouldn't cheat because I should honestly show what I have learned."