Which of the Following Statements About Upgrading Is True

Which of the following statements about upgrading is true?

A) It is the same as cross-selling.
B) The objective of upgrading is to expand the seller's business by selling to the customer in bulk quantities.
C) To upgrade a customer the salesperson must show that the initial purchase was not exactly what the customer needed.
D) During the needs identification phase of upselling, it is a good idea to emphasize that the initial decision was a good one.
E) All of the above.