A state legislature increased the tax on gasoline from $.20 to $.30 per gallon. A supporter said the tax would "make the distribution of after-tax income in the state more equal." This statement would be true only if it could be shown that, after the tax is increased:a. people with high incomes tend to spend a larger portion of their incomes on gasoline than people with low incomeb. people with less incomes tend to spend a larger portion of their incomes on gasoline than people with low incomec. people with high incomes tend to spend a larger portion of their incomes on gasoline than people with high incomed. people with low incomes tend to spend a larger portion of their incomes on gasoline than people with low income