Rainbow Painting Company is considering whether to purchase a new spray paint machine that costs $8,000. The machine is expected reduce labor costs by $1,600 per year. The machine is expected to have a useful life of 10 years. The unadjusted rate of return for this investment is

a.Continuous improvement.

b. Identifying projects that fail to generate expected results for further analysis c. Motivate managers to monitor capital investment decisions. d. All of the choices describe purposes for conducting post audits