The B/C ratio for the following cash flow estimates calculated at an interest rate of 10% is.89, which means that the project is currently not justified. What would the maximum first cost be for this project to be justified? Item PW of benefits, $ AW of disbenefits, $/year First cost, $ M&O costs, $/yr Life, years Estimate 3,800,000 45,000 1,200,000 310,000 20