Income in a single year is a very poor guide to income and wealth over even a few years, much less a lifetime; in the longer run, a tax on what people spend is therefore not much different than a tax on their income.
(A) than a tax on their income
(B) from a tax on what they earn
(C) than taxing income
(D) from the income tax
(E) than a tax on what people earn


how is " from a tax on what they earn" different from " Income tax"??