Select the Description of a Public Good

Select the description of a public good.

A) a thing that cannot be profitably produced because it is difficult to exclude nonpaying customers from receiving the benefit
B) a product that is consumed only because people cannot afford what they actually prefer
C) a newly developed energy source that has the potential to make up a large portion of a country's energy portfolio
D) a government benefit such as a tax credit that reduces energy costs for lower income people