When Comparing the Annual Inflation Rate in the United States

When comparing the annual inflation rate in the United States based on the CPI with the annual inflation rate based on the PCE price index, the data show that the two inflation rates

A) move in opposite directions.
B) remained constant over the forty year period after 1979.
C) steadily increased over the forth year period after 1979.
D) move up and down in similar but not identical ways.
E) both fluctuate but the fluctuations have little relationship to each other.