How Can Kohlberg's Theory of Moral Development Be Used for Moral

How can Kohlberg's theory of moral development be used for moral reasoning to determine whether an action is ethical?

A) a person can emulate higher stage moral reasoning
B) a person who knows their moral development can consciously make ethical judgments at their own stage
C) it provides a way to find morally depraved individuals who should act as examples of what should not be done
D) it provides a way to find morally gifted individuals who can be tasked with decision-making
E) the theory is insufficient by itself, and must guided by absolute virtues