Which of the following is true if the production of a good gives rise to a positive externality?
A) The marginal social benefit from each level of output exceeds the consumers' willingness to pay.
B) The marginal private benefit from production exceeds the marginal social benefit.
C) The demand curve for the good shifts to the left in the presence of positive externalities.
D) The demand curve for the good shifts to the right in the presence of positive externalities.
Question 2
If a polluting producer is forced to pay a pollution charge, what is the effect on the supply and demand curves for the product?
A) The quantity supplied along the firm's supply curve increases.
B) The firm's demand curve shifts leftward.
C) The firm's supply curve shifts rightward.
D) The firm's supply curve shifts leftward.
E) Both the supply curve and the demand curve shift leftward.
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