While Medicaid is targeted towards low-income individuals, exact qualifications are determined by _____

Suppose the firms in a perfectly competitive industry are earning positive economic profits

How will these positive profits affect the flow of resources into the industry? How will the equilibrium quantity and price change in the industry because of the profits?

The four-firm concentration ratio

A) indicates the total profitability among the top four firms in an industry. B) is an indicator of the degree of monopolistic competition. C) indicates the presence and intensity of an oligopoly market. D) is used by the government as a basis for anti-trust cases.