Which of the following is NOT a criticism of the CPI? O A. The CPI ignores the changes of prices of goods that firms produce and sell to each other. O B. The CPI does not account for the way consumer substitute less expensive items for higher priced items. O C. The CPI ignores changes in consumption patterns that occur between years in which it revises the index. O D. The CPI ignores successful new products until long after they have been introduced