Multiple Choice
Refer to the diagrams below in which figures (a) and (b) show demand curves reflecting the prices Alvin and Elmer are willing to pay for a public good, rather than do without it.If the marginal cost of the optimal quantity of this public good is $10, the optimal quantity must be:
A) 1 unit.
B) 2 units.
C) 3 units.
D) 4 units.
Correct Answer:

Verified
Correct Answer:
Verified
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