The "Wheel of Retailing" Theory Says That

The "wheel of retailing" theory says that:

A) retailers go through cycles from high costs and prices to lower costs and profits.
B) general stores will dominate U.S. retailing in the next century.
C) new types of retailers enter as low-status, low-margin, low-price operators and eventually offer more services and charge higher prices.
D) all of the above are true.
E) none of the above are true.