How do economies of scale contribute to the development of an oligopoly?
A) Economies of scale make it legally difficult for new firms to enter.
B) Economies of scale make small-scale producers inefficient.
C) Economies of scale are based on control of a key resource, without which other firms cannot enter an industry.
D) Economies of scale are guaranteed when a patent is granted.
B
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James has a comparative advantage in the production of corn, while Harry has a comparative advantage in the production of bread. If James and Harry decide to trade with each other, _____
a. both Harry and James will enjoy gains from trade b. only Harry will enjoy gains from trade c. only Harry will suffer losses from trade d. only James will suffer loses from trade e. neither of them will gain from trade
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