An advantage of the personal consumption expenditures price index (PCE) over the Consumer Price Index (CPI) as a measure of inflation is that the PCE
a. includes the prices of consumer services, but not consumer goods.
b. includes the prices of more consumer goods and services.
c. is a fixed market-basket price index that does not allow the mix of products to change each year.
d. includes the prices of consumer goods, but not consumer services.