What Role Does Motivation Play in Exhibiting the Virtue of Honesty

What role does motivation play in exhibiting the virtue of honesty?

A) Only someone who does the honest thing from a desire to be honest has truly acted honestly.
B) Sometimes people need external motivation to exhibit a virtue such as honesty.
C) Anyone who does the honest thing exhibits the virtue of honesty, regardless of his or her motivation for doing so.
D) Only someone who does the honest thing from a desire to do his or her duty has truly acted honestly.