Q. When consumers are not identical, a market failure may occur when
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(A)
a monopoly producer provides compatibility.
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(B)
a monopoly producer does not provide compatibility and compatibility is not socially preferred.
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(C)
a monopoly provides compatibility and compatibility is socially preferred.
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(D)
a monopoly producer does not provide compatibility but compatibility is socially preferred to incompatibility.
β
Correct Answer: (D)
a monopoly producer does not provide compatibility but compatibility is socially preferred to incompatibility.