Answer: C.) It tells a moral tale that is at odds with the pardoner's own persona.
During the introduction to the pardoner's tale, we find out that this character is extremely amoral, selfish and greedy. Nevertheless, he is a preacher, and he preaches against these same vices. However, he admits that he does so solely to get money. The pardoner, therefore, is a very unusual character.
His tale is unusual as well. The tale he tells is a moral one, with a good message, and one which condemns all the sins that he himself practices. Therefore, the moral tale is at odds with his own persona.
