Which of the Following Statements Is Correct in Relation to Post-Purchase

Which of the following statements is correct in relation to post-purchase dissonance?

A) A consumer feeling they have purchased too much after a shopping trip is an example of post-purchase dissonance.
B) A consumer having second thoughts about the wisdom of a product purchase is an example of post-purchase dissonance.
C) A salesperson who follows up with a customer after they have made a purchase may be able to reduce that customer's post-purchase dissonance.
D) All of the options listed.
E) Both b and c.