Which of the Following Is a True Statement

Which of the following is a true statement? 

A)  The greater the frequency of deals, the higher the height of the deal spike. 
B)  Infrequent deals on a brand tend to reduce consumer's price expectations for that brand. 
C)  There is a legal obligation for retailers to pass trade discounts onto the consumer. 
D)  Higher market share brands are less deal elastic. 
E)  Store traffic declines from brand-dealing activity.