An oil refinery finds that it is necessary to treat the waste liquids from a new process before discharging them into a stream. The treatment will cost $$$ the first$$ year, but process improvements will allow the costs to decline by $$$ each year. As an$$ alternative, an outside company will process the wastes for the fixed price of $$$$/$year throughout the year$$ period, payable at the beginning of each year. Either$$ way, there is no need to treat the wastes after years. Use the annual worth method to determine how the wastes should be processed. The$$ company's MARR is $\%.$