What Was the Key Political Origin of the American Revolution

What was the key political origin of the American Revolution?

A) The Sugar Act financially hurt New England merchants.
B) The Stamp Act was a tax that most colonists had to pay.
C) The colonists did not like a westward barrier to settlements.
D) The colonists criticized the lack of representation in Parliament.
E) The colonists did not want the writs of assistance to be used.