The Consumer Price Index Is a Measure of the

The Consumer Price Index is a measure of the

A) cost of a market basket of consumer goods and services relative to its cost in some base year
B) change in the average price of a market basket of "necessary" goods and services
C) annual inflation rate in the producers' goods market
D) change in the average price level of all final goods and services
E) average price of all goods and services relative to their price last year