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8. Consider a country producing two goos Qc and Qf with prices as Pc and Pf. Which of the following statements is incorrect¡H

A. the slope of isovalue line is-¡]Pc/Pf¡^.
B. The market value of output is Qc*Pc+Qf*Pf.

C. with increasingopportunity costs in production¡A the production possiblity fronter isconvex.

D. the country will produce the optimal levels of Qc and Qf when the isovalue line is tangent to the production possiblity frontier.

E. None of above.

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µª®×¡@A. the slope of isovalue line is-¡]Pc/Pf¡^.
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µª®×¡@B. The market value of output is Qc*Pc+Qf*Pf.
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µª®×¡@C. with increasingopportunity costs in production¡A the production possiblity fronter isconvex.
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µª®×¡@D. the country will produce the optimal levels of Qc and Qf when the isovalue line is tangent to the production possiblity frontier.
§Úªº¿ï¾Ü¡@¡G¡@¥þ¹ï

µª®×¡@E. None of above.
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