Which of the following are based on an ability to pay? Explain. a. State Y collects a sales tax of..

Which of the following are based on an ability to pay?
Explain.

a. State Y collects a sales tax of 5% on all purchases of
goods and services.

b. State X collects a sales tax of 5% on all purchases of
goods and services but gives low-income families a tax credit for sales taxes.

c. Students at State University are given free parking in
designated lots. Faculty and staff members must pay $125 per year for parking
at State University.

d. Barton City charges all customers a flat monthly rate of
$10 for garbage pickup.