Assume your company needs to replace an elevator. There are two alternatives (both of which meet all standards required to safely operate the elevator). Elevator 1 has a purchase price of $100,000, an operating cost of $10,000 per year, and a useful life of 10 years. Your company uses straight line depreciation and you estimate that the elevator will not be worth anything at the end of its useful life. Elevator 2 has a purchase price of $150,000, an operating cost of $8,000 per year, and a useful life of 14 years. Your company uses straight line depreciation and you estimate that the elevator will not be worth anything at the end of its useful life. Your company uses a discount rate of 8% and its marginal tax rate is 21%. a. What is the operating cash flow and equivalent annual cost for Elevator 1 ? b. What is the operating cash flow and equivalent annual cost for Elevator 2? c. Which elevator should your company purchase? Why