
Answer:
D. The change in real GDP cannot be determined without more information.
Explanation:
GDP is the total value (P X Q) of final goods & services produced in an economy during a period of time.
Real GDP is measured at constant base year price level, such that it reflects change only due to quantity & not price rise (inflation).
Nominal GDP is measured at current year price level, it reflects change due to both quantity & price rise (inflation).
Nominal GDP / Real GDP = GDP Deflator. It measures the average price level change in current period relative to base period, helps eliminating price change effect & converting Nominal GDP into Real GDP .
Cannedada: 2018 Nominal GDP = $4 Billion, 2019 Nominal GDP = $5 Billion
Nominal GDP has increased between 2008 & 2009. Production rise between 2008, 2009 cant be found without 2009 Real GDP. Average price level rise between 2008 & 2009 cant be found without 2009 Real GDP (through GDP deflator).