Consumers Have Become More Sensitive and Responsive to Sales Promotion

Consumers have become more sensitive and responsive to sales promotion because:

A) consumers are multi-brand loyal
B) consumers purchase more on the basis of price,value,and convenience than brand.
C) many purchase decisions are being made in the store where many sales promotions are found
D) marketers are offering consumers more promotions to attract and maintain customers
E) of all of the above reasons