Regardless of the Index Used

Regardless of the index used:

A) inflation is measured as a percent increase in the index from one year to the next.
B) the same results for inflation are reached, so each index is equally useful.
C) the measurement of inflation is the same, so the index that is easiest to calculate is often used.
D) an accurate picture is portrayed regarding how prices for all consumer goods and services change from year to year.