Прочитайте текст и отметьте предложение, соответствующее его содержанию: One function of markets is to find equilibrium prices that balance the supplies of and demands for goods and services. An equilibrium price is one at which each producer can sell all he wants to produce and each consumer can buy all he demands. The interaction of supply and demand determines the prices and the quantities that will "clear" competitive markets. Changes in one market will affect relative price rations and cause changes in other markets as well.