A positive externality exists when

A. marginal social costs are less than marginal private costs.
B. marginal social costs are greater than marginal private costs.
C. marginal social benefits are less than marginal private benefits.
D. marginal social benefits are greater than marginal private benefits.
E. a and d

Answer: D

Economics

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The diagram that shows the income received and payments made by each sector of the economy is the

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