A large textile company is trying to decide which sludge dewatering process it should use ahead of its sludge drying operation. The costs associated with centrifuge and belt press systems are shown. Compare them on the basis of their annual worths using an interest rate of 10% per year. System First cost, $ AOC, $/year Overhaul in year 2, $ Salvage value, $ Life, years The annual worth of the centrifuge system is $- The system selected on the basis of the annual worth analysis is the (Click to select) system. Centrifuge -250,000 -31,000 40,000 6 Belt Press -170,000 -35,000 -26,000 10,000 14 and the annual worth of the belt press system is $-