The Law of One Price Is

The law of one price is

A) the principle that to be competitive, a company must offer its product at only one price.
B) a principle suggested by Canadian economists that means that all products in a given economy should be sold for the same price.
C) that the supply and demand of a product must not alter its price.
D) a principle that identical products should sell for the same price in all countries.
E) if a retailer puts an item on sale, all other retailers must match their price for consumers.