2 a) In the so-called Five Force Model model, the five forces are: Supplier Power, Buyer Power, Threat of Substitutes, Threat of New Entrants, and Rivalry. Given this framework, explain briefly how the number of firms, market growth, fixed costs, switching costs, brand identity, and product differentiation affect the degree of rivalry in any industry. (Note: You do not need to draw any figure to answer this question) b) Evaluate the relative attractiveness profitability of commercial jet aircraft industry (which is virtually dominated by two firms Boeing and Airbus with significant spending on research and development, learning curve effects, and economies of scale) or fast food industry comprised of several large multinational firms like MeDonalds. KFC. and Pizza Hut. Be sure to structure your answer around key variables affecting the Five Forces