28. Which of the following statements is false?
(A) Commodity prices are fluctuated daily.
(B) The quality of a specific producer's product will be specified in a commodity contract.
(C) Commodities are often substances that come out of the earth.
(D) Commodity prices are determined by supply and demand.
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統計: A(1), B(0), C(0), D(0), E(0) #3373204
統計: A(1), B(0), C(0), D(0), E(0) #3373204