During the final stage of the consumer buying decision process, a person might experience cognitive dissonance, which is _______. a. doubts in the buyer's mind about whether purchasing the product was the right decision b. additional information sought from outside sources c. when a buyer becomes aware of a difference between a desired state and an actual condition d. a group of brands that a buyer views as possible alternatives e. objective characteristics (such as the size, speed, capacity) and subjective characteristics (such as style and color) that are important to him or her.