Answer: d. quantity demanded stays the same whenever price changes.
In the case of perfectly inelastic demand,
a. the change in quantity demanded equals the change in price.
b. the percentage change in quantity demanded equals the percentage change in price.
c. infinitely-large changes in quantity demanded result from very small changes in the price.
d. quantity demanded stays the same whenever price changes.
Economics
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The allocative function of price is to:
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Refer to the figure shown, which represents the production possibilities frontiers for Countries A and B. The slope of Country A's production possibilities frontier:
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The expected damage to innocent third parties per unit of the good produced is shown as the "external cost" in Figure 27.1. An unregulated competitive market for the product produces a quantity of Q* units, which sell for a price of P* per unit. If the competitive industry were producing the socially optimal quantity of this product, the market price of the product per unit would be 
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Economics