5. Again assume the repeatability assumption is valid, an after-tax MARR of 15% and an effective tax rate of 26% and determine which alternative from problem 4 should be selected based on least cost using the after tax cash flows. Assume the initial cost is for equipment that will be depreciated using MACRS with a 5 year recovery period. (20 points) The math for this problem MUST be done using one or more of the functions we learned in Excel (PV, FV, PMT, RATE, NPER, IRR, MIRR and/or NPV)