The Difference Between the Price of Electronic Equipment in a Retail

The difference between the price of electronic equipment in a retail store and the price at an Internet store reflects,in part,

A) the extent to which sales agents drive the price up for extra profit.
B) the lack of competition between retail stores and online stores.
C) the value of personal attention and support at the retail store.
D) excessive markup.
E) that online stores do not maximize profit.