Which of the Following Is the Best Example of a Supply-Side

Which of the following is the best example of a supply-side market failure?

A) No one provides street lights in a town because, once the lights are in operation, people don’t have to pay to use them.
B) A firm keeps its production costs down by dumping its waste in the nearby river, adversely affecting water quality for residents in the area.
C) Government imposes taxes on the production of a socially desirable good.
D) Street performers don’t get full payment for the value of their output because people watch and enjoy the shows without paying the artist.