【单选题】All the following choices about GDP deflator are ture , except the one choice( ).
A.
GDP deflator equal the an average of the current prices of all the goods and services included in GDP expressed as a percentage of base-year prices.
B.
GDP deflator uses all the products in GDP(exports consumption investment government buying), CPI only uses the prices of consumption.
C.
GDP deflator weights each item using quantity information of current and past, it includes new goods, quality improvement and substitution goods. CPI not.
D.
GDP deflator uses all the consumption products in GDP and CPI only uses the prices of consumption.
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