Which of the Following Is True Regarding Sales Promotion

Which of the following is true regarding sales promotion?

A) Sales promotion is not likely to be used in the market maturity stage of the product life cycle.
B) The objectives and situation should determine what specific type of sales promotion is best.
C) Sales promotion should not be needed if a firm has a good mass selling program.
D) Objectives should be developed after the other promotion decisions have been made,so that the manager knows how much is left in the budget.
E) None of these answers is correct.