Please show all work, using formulas/equations. NO excel, thank you!!

5. (15 pts) The site for a major county public works project is under consideration. Four sites have met all the county's criteria for the project, and a benefit-cost analysis is underway to determine which site will provide the best benefit-cost ratio. The present worths of the net benefits, capital investments, and net O&M costs are given in the table below for project. First, determine the B/C ratio for each project individually. Then, using incremental B/C analysis, determine which of the sites should be chosen. each Project PW of Net Benefits PW of Capital Costs PW of Net 0&M Costs $21 Million $16 Million $20 Million $28 Million $12 Million $9 Million $18 Million $21 Million $4 Million $3 Million $4 Million $5 Million