The Ginl coefficient In Hamsterville has decreased every year for the past ten years. Which of the following Is a potential cause of a decreasing Ginl coefficient? Choose 1 answer: A) the implementation of a progressive Income tax system B restrictions on the ability of labor unions to negotiate the switch to a tax system based on sales taxes Increasing the returns to owners of capital a stock market boom that benefited the nation's top 10% of income earners