The Consumer Price Index: (A) replaced the CPI Index in the 1980's when the Bureau of Economic Research changed the methodology of measuring inflation. O B) measures every month the average change in prices paid for a market basket of goods and services purchased by the average urban family of 4 in the U.S. (C) measures the average change in prices for the average urban family of 4 once per year. D) measures the average change in the prices of all items in the economy monthly to come up with an accurate measure of inflation