A certain chemical exposure has direct costs of $ 15, 000 per occurrence and indirect cost of $ 250, 000 per occurrence. Exposure frequency is 0.1 per year, but it will be reduced by half with the installation of a $ 12,000 new engineering control system. The maintenance of the new system will result in $ 500 per year. I need a table to show detailed costs and benefits andperform the cost/benefit analysis for the next 20 years, and show your calculation process. What is your decision, and why?