In the process of researching new equipment, Sheffield settled on two seemingly viable alternatives: 1. A one-time investment today of $40,000, which should generate net after-tax cash inflows of $20,000 per year for the next 3 years. 2. A one-time investment today of $50,000, which should generate net after-tax cash flows of $30,000 per year for the next 3 years. Both amounts already include the depreciation tax shield. Sheffield's minimum required return is 8%. (a1) Calculate the NPV and IRR for both of these investments. (Round present value factor calculations to 5 decimal places, e.g. 1.25124 and final NPV answers to 0 decimal places e.g. 58,971. Round IRR to 2 decimal places, e.g. 15.25\%. Enter negative amounts using either a negative sign preceding the number, e.g. −58,971 or parentheses, e.g. (58,971).) Click here to view the factor table (a2) Which investment appears to be the better option? (a2) Which investment appears to be the better option? TABLE 7.2 Present Value of 1 (Present Value of a Single Sum)