1a) Does it make sense to attempt to eliminateallpollution, or is there an "optimal" amount of pollution?Explain.

1b) Supposea city releases 16 million gallons of raw sewageinto a nearby lake. The table below shows thetotal costs of cleaning up the sewage to different levels, together with the total benefits of doing so.(Benefits include environmental, recreational, health, and industrial benefits.)

Total Co at Total Benefits. [thousands of [thousands of dollars} dollars} 1&- million gallona Current Current Situation situation