Study the graph, and then answer the question.

marginal tax rate, tax paid, and tax share for those with incomes over $100,000 from 1920 to 1929

which statement best describes the trends shown in the graph?
as the highest tax rate was reduced in the 1920s, the economy grew.
as the highest tax rate was reduced in the 1920s, the economy struggled.
as the highest tax rate was increased in the 1920s, the economy grew.
as the highest tax rate was increased in the 1920s, the economy struggled.