Which of the following statements is true? a) The GDP deflator calculates inflation using the current production basket while the CPI uses a fixed production basket. b) The rate of change of the GDP deflator indicates real GDP growth because it is based on current production in the economy. c) Changes in nominal GDP are the same as changes in the CPI because both capture changes in the cost of living. d) The GDP deflator calculates inflation using the current production basket while the CPI uses a fixed consumption basket. e) The GDP deflator is in real terms while the CPI is in nominal terms.