A construction contractor is considering buying a crane, and the contractor narrowed down the alternatives to two. Alternative A requires purchasing a new cane with an initial cost $650,000, annual operation and maintenance of $15,000 at first year to be increased by $2000 every year, and salvage value of $150,000 after nine years. This crane will generate an equivalent income of $125,000 per year. Alternative B requires purchasing a used crane. It has initial cost of $450,000, annual operation and maintenance of $27,000 at first year and increase by $5000 every year, and salvage value of $75,000 after nine years. This used crane will generate an equivalent income of $115,000 per year. Use MARR =8%. NPV of the Alternative B= O $718,578.84 $478,204.36 $68,578.84 $28,204.36