FIND AW of A, B, C, D

A manufacturing process can be designed for varying degrees of automation. The following is relevant cost information. Determine which is best by after-tax analysis using an income tax rate of 45%, an after-tax MARR of 15%, and SL depreciation. Assume that each has a life of six years and no BV or MV Annual Labor Annual Power and Maintenance Expense $500 900 1,300 1,700 First Degree Cost Expense $12,000 $10,000 7,500 4,000 3,000 14,000 22,000 33,000