Problem 5: (20 points) Provide a short answer to each of the questions below (write no more than 2-3 sentences). a) What are some of the practices that firms adopt to facilitate collusion? b) What is the difference between structural barriers to entry and strategic barriers to entry? c) What key feature of firm interaction in the Value Net analysis of Brandenburger and Nalebuff is missing in the Porter's 5 forces analysis? d) In contexts where firms can choose their production capacity, under what conditions will a firm want to deter entry by choosing a high-capacity level? Justify your answer. e) How do the number of firms in an industry and the lumpiness of transactions affect the possibility of cooperation among firms