Which of the following is true of the Cournot model of a duopoly? O The duopoly equilibrium lies between the pure-monopoly and purely competitive outcomes. 0 The demand curve facing each rm is horizontal. O The market price is determined by the output produced by the rm with the larger market share. 0 The products sold bythe firm are imperfect substitutes. O The equilibrium price in a Cournot duopoly is higher than the price in a monopoly