With Regard to Incomes at the Time of the Revolution

With regard to incomes at the time of the Revolution,

A) colonial incomes before taxation were high, but because of heavy taxation, after-tax incomes were lower than those of the British.
B) there is no data available that provide any information on the subject.
C) both before-tax and after-tax colonial incomes were lower than those in England.
D) incomes in the colonies were higher than in England, especially after-tax incomes, because of relatively light taxation of the colonists.