Please answer the following questions, Thanks!!!

Question 10 3 pts Other things being equal, the Bertrand duopoly model with homogeneous product suggests that profit-maximizing firms in an oligopolistic industry: I. Charge a higher price than monopolies. II. Charge a higher price than perfectly-competitive firms. Ill. Charge a lower price than monopolies. IV. Charge the same price as perfectly-competitive firms. Which of the following is correct? O II and Ill only. O I only. O I and II only. O Ill and IV only. Question 11 3 pts Two firms, 1 and 2, compete in Cournot. The demand is P=180-8Q and the marginal cost of both firms is MC=20. Which of the following is true? The best response of firm 1 is q1=10+q2/2 The best response of firm 1 is q1=10-q2/2. The best response of firm 1 is p1=10+p2/2. The best response of firm 1 is p1=10-p2/2. Question 12 3 pts The consumer surplus is The additional cost for producing one additional unit of the product. The difference between the marginal revenue and the price of the product. The additional revenue of the firm when they sell one additional unit of the product. The difference between the price of the product and the willingness to pay of the consumers