Acme Plastics Company must choose between two types of injection molding machines. Machine A costs $$600,000,$ will last for five years, and will require $$60,000$ in maintenance each year. Machine B costs $$750,000,$ will last for seven years, and will require $$30,000$ in maintenance each year. Maintenance costs for cranes A and B occur at the end of each year. The appropriate discount rate is $12$ percent per year. Which machine should Acme purchase? Show your work below.