How Can the Use of an EDLP Strategy Increase a Retailer's

How can the use of an EDLP strategy increase a retailer's profit margin?

A) The stable prices caused by EDLP requires the use of more weekly advertising
B) Employees provide less customer service because of the sale-stimulated numbers of people
C) EDLP increases the large variations in demand caused by frequent sales
D) Employees do not have to continually make price reductions
E) A more predictable demand increases the likelihood of stockouts