One of the following statements is correct about the customer-holdover effect

is: (1)

a. When new customers created by the marketing expenditures remain customers in the succeeding periods

b. The asymmetry in sales buildup compared with sales decline

C. Sales reach a peak before settling down to steady state for which many customers try a new brand but only few become regular users.

D. Due to delays between when marketing dollars are spent and their impact.

E. A sales promotion not only attracts new customers but encourages existing customers to stock up or buy ahead