Within the five forces framework, the five most common threats facing firms from their competitive environment include each of the following EXCEPT O A buyer's negotiation power OB. rivalry OC. substitutes. OD products O E regulators QUESTION 6 The air travel business is one of the most challenging venture types. It is a mature industry that allows no pricing power. The firms operate under extreme regulatory requirements. The costs are high. It is capital intensive It involves complex technology. The market is competitive, demand cyclical, and customers are less loyal than most businesses. Many airlines employ unionized labor and carry enormous pension liabilities. Almost all air travel companies burn economic value. Then why do we have airlines? What explains the existence of this type of business? O A Government requires existence of the air travel service B. Air travel demand has a H index close to 10000 C. Airlines have a going concern value. They cover their marginal costs as they exploit a persistent need D. Airlines have ancillary revenue sources which generate cash for operations, E. From above both c and d are correct