The Chain-Weighted Output Index Method of Measuring Real GDP Is

The chain-weighted output index method of measuring real GDP is based on

A) using current prices rather than base year prices.
B) averaging the market value of the expenditures over a two year period and then comparing with a base period.
C) using the prices of two adjacent years to calculate the growth rate of real GDP.
D) averaging the nominal and real measures of GDP to come up with a more accurate figure.