Which Statement Indicates That an Income Tax Is Progressive

Multiple Choice

Which statement indicates that an income tax is progressive?  

A)  High-income people pay $3,000; low-income people pay $1,000. 
B)  Low-income people pay $3,000; high-income people pay $1,000. 
C)  High-income and low-income people all pay $1,000 each. 
D)  High-income people pay 20 percent of their income in taxes; low-income people pay 10 percent.