Which of the Following Is the Significance of a Country's

Multiple Choice

Which of the following is the significance of a country's price index?

A) It helps in measuring changes in the nominal interest rate in a country.
B) It helps in measuring the total disposable income of a country.
C) It helps in determining a country's real GDP each year.
D) It helps in measuring changes in the prices of only luxury goods.
E) It helps in measuring the demand for goods and services exported by a country.