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Problem on shortages or surpluses

I have a problem in economics on Problem on shortages or surpluses. Please help me in the following question. No shortages or surpluses exist if: (1) Central planners set prices which equivalent production costs. (2) The market is in equilibrium. (3) Quantity supplied equivalents the market price. (4) Relative prices equivalent the absolute prices.

Select the most appropriate answer.

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