Which of the following is NOT a character of perfect competition?

The option that is NOT a character of perfect competition is "Supply and demand are equal." In perfect competition, the supply and demand are not necessarily equal, but they interact to determine the market price. The other three options are characteristics of perfect competition: - Products are identical: In perfect competition, all firms sell the same product, and there are no differences in quality or features among them. - There is perfect knowledge: Buyers and sellers have complete information about the market, including prices, quality, and availability of products. - There is no advertising: In perfect competition, firms do not advertise because they sell identical products, and there is no need to differentiate their products from their competitors.