12-72 Use the after-tax IRR method to evaluate the A following three alternatives for MACRS 3-year property, and offer a recommendation. The after- tax MARR is 25%, the project life is 5 years, and the firm has a combined incremental tax rate of 45%. Salvage S 5,000 First Cost A $14,000 B 18,000 10,000 Annual Alt. Costs Value $2500 1000 5000 10,000