Associate each concept (Roman numbers) with its definition (capital letters):
I. Progressive Tax
II. Excise Tax
III. Proportional Tax
III. Regressive Tax
A. A tax applied to a particular good or service.
B. A taxation system in which the higher the earnings, the higher the taxation rate.
C. A taxation system that sets a flat percentage due in taxes, regardless of someone's income.
D. A taxation system in which the higher the earnings, the smaller the share of taxes paid.
