. (5 points each) With ROI of 10%, there exist three equal-service machines with the toss Revenues for all three alternatives are expected to be the same. [unit: S Electric-Powered 2,5003,500 Gas-Powered 3.500 700 Solar-Powdered 6,000 50 nitial Cost Annual Maintenance & 900 Operating Cost Salvage Value Life (years) 200 350 400 Which machine will be the best option for this organization? a) For PW method b) For AW method c) For FW method