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(Choose 1 answer)
Which of the following statements is correct?
A.. Since air pollution creates a negative externality, social welfare will be enhanced when some, but not all air pollution is eliminated.
B. Since air pollution creates a negative externality, social welfare is optimal when all air pollution is eliminated.
C. Since air pollution creates a negative externality, governments should encourage private firms to consider only private costs.
D. Since air pollution creates a negative externality, the free market result maximizes social welfare.
