This graph shows the trend of the Gross Domestic Product in the 1920s.
Based on this graph, what conclusion can be drawn about the economic situation in the 1920s?
A The economy was strong, and there was a period of prosperity.
B The economy was in recession, and unemployment was high.
C The economy was weak because consumers were unwilling to buy new goods.
D The economy was stagnant and did not experience any growth.
