A competitive environment penalizes the inefficient use of resources. Select all of the true statements. A. More firms competing in a market means more substitutes, so consumers have more options, and their demand is less elastic. B. Competition drives the price closer to the marginal cost of production. C. Competition forces firms to improve efficiency or lose profits. D. Consolidation leads to concentration of market power that allows providers to act like monopolists and price their products above marginal cost