After the dentist spent almost $600 to purchase the Apollo Whitening System to use with patients who want their teeth bleached, he learned that a more efficient system with fewer potential side effects was available for $400. From this information you know the dentist most likely experienced:
A. misinformation.
B. information overload.
C. purchase satisfaction.
D. a communication barrier.
E. purchase dissonance.
Answer: E. purchase dissonance.