In Singapore, gum is available at pharmacies; before buying a pack, however, consumers must register their names and addresses

Universal Appliance prices its refrigerators at five distinct price levels based on finish, style, capacity, and features. They range from $799 to $9,500. This is an illustration of price steps

Indicate whether the statement is true or false

Which of the following is the most important constraint on the explanatory power of the IO paradigm?

A) Many industries are imperfectly competitive. B) Many companies are locally but not internationally competitive. C) Most customers have perfect knowledge of the products they select. D) Most industries have many firms that each have small market shares.