The Market Basket Approach

The market basket approach:

A) measures changes in the cost of a fixed shopping basket, assuming that typical consumer buys the same items in the same quantities.
B) gives us a single number to measure how much your total costs for all goods and services change over time.
C) is equivalent to simply averaging the increase in the price of each grocery item.
D) is how economists monitor trends in what people like to buy from year to year.