One source of federal tax revenue is fees. The government charges fees for specific services it provides. What is an example of this kind of fee?

A. Esteban noticed that, after he got a raise, more money was taken out of his paycheck.
B. Sanjay and his family had to pay to use a camping spot at Yellowstone National Park.
C. Flora was surprised when the price of a pair of headphones produced in China increased.
D. Makayla’s new dog-walking business required a large sum in payroll taxes for her employees.