Amazon is the dominant firm in theonlineshoppingserviceindustry, which has a total market demand given byQ= 100 - 2P. Amazonhas competition from a fringe of four small firms that produce where their individual marginal costs equal the market price. The fringe firms each have total costs given byTC_i= 10Q_i+Q²_i. If Amazon's total costs are given byTC_A= 10 + 10Q_A, what price should Amazonestablish for onlineshopping service?