After a long drought, the manager of Long Branch Farm is considering the installation of an irrigation system which will cost $100,000. It is estimated that the irrigation system will increase revenues by $20,500 annually, although operating expenses other than depreciation will also increase by $5,000. The system will be depreciated using MACRS over its depreciable life (5 years) to a zero salvage value. If the tax rate on ordinary income is 40 percent, what is the project's IRR? (MACRS DEPRECIATION SCHEDULE FOR A 5-YEAR PROJECT = 20%, 32%, 19%, 12%, 11%, 6%). Assume that the project life and the depreciable life are the same. a. 12.6% b. -1.3% c. 13.0% d. 10.2% e. -4.8%