Which Best Describes the Cost-Benefit Results of the First 20

question 165

Multiple Choice

Which best describes the cost-benefit results of the first 20 years of the Clean Air?

• A)While costs have exceed benefits 2 to 1,benefits are expected to increase in the coming decades.
• B)Because many of the benefits of clean air are intangible,it is not possible to make such comparisons.
• C)Costs have been far greater than the benefits.
• D)In 2010,alone,estimated benefits exceeded costs by 4 to 1.

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