Calculate the B/C ratio for the following cash flow estimates at a discount rate of 7% per year. Use present worth values to solve this problem. Would you recommend this project based on its B/C ratio? Item Cash Flow PW of benefits, $ 5,700,000 AW of disbenefits, $/year 32,000 First cost, $ 4,100,000 M&O costs, $/year 60,000 Life of project, years 20