Answer:
D
Explanation:
The consumer price index measures the changes in price of a basket of good. It is used to measure inflation. Because the price of price of used cars and trucks in US has increased , the CPI would increase
CPI = (cost of basket of goods in current period / cost of basket of goods in base period) x 100
Changes in the quality of good is not included in the calculation of CPI. This is one of its drawbacks