From "Saez 2013 Striking It Richer.pdf" an article concerning income inequality, how has the income composition pattern of the top 1% of Americans changed over the century? Question 7 options: A significant fraction of the surge in top incomes since 1970 is due to an explosion of investments Top income earners today are rentiers deriving their incomes from past wealth and inheritance with fortunes comparable to those accumulated during the Gilded Age The share of wage and salary income has increased sharply from the 1920s to the present The share of wage and salary income has decreased sharply from the 1920s to the present