WAEC Economics 2025 Question 17

The table below shows the percentage paid as tax on different income levels. Use it to answer the question.
Tax System | $100 | $500 | $1000
Q | 10% | 10% | 10%
T | 90% | 70% | 30%
S | 20% | 65% | 40%
R | 10% | 40% | 70%
Which tax system is progressive? Tax system

1. A.T.
2. B.Q.
3. C.R.
4. D.S.