How does a progressive income tax differ from a flat or proportional income tax? O Instead of everyone paying the same percentage like a flat tax, with a progressive income tax, people who earn more than $100,000 are exempt from paying income taxes. O Instead of everyone paying the same percentage like a flat tax, with a progressive income tax, people who earn less that $50,000 are exempt from paying income taxes. O Instead of everyone paying the same percentage like a flat tax, with a progressive income tax, people who earn a higher income pay a higher income tax rate. O Instead of everyone paying the same percentage like a flat tax, with a progressive income tax, people who earn a higher income pay a lower income tax rate