Susan Carefully Rinses Her Mouth with an Unpleasant-Tasting Mouthwash Every

Susan carefully rinses her mouth with an unpleasant-tasting mouthwash every day.One day,Susan reads an article reporting credible dental research that suggests that mouthwash is completely ineffective and that mouthwash may even be related to tooth decay.The discomfort that Susan experiences in response to this article is called

A) self-deception.
B) insufficient justification.
C) self-justification.
D) cognitive dissonance.
E) self-discrepancy.