An electronic circuit board manufacturer is considering three mutually exclusive cost- reduction (revenue) projects for its PC-board manufacturing plant. All have lives of 8 years and the company's MARR is 15% per year. The financial data for the 3 alternatives is shown below: A B First Cost -70,000 -100,000 Annual Savings 18,000 28,200 Salvage Value 10,000 15,000 Use the ROR analysis to select the best alternative. -160,000 42,200 27,000