Because of the Free- Rider Problem

Because of the free- rider problem,

A) government will not be able to produce an efficient amount of a public good.
B) people need to pay a government user fee to pay for the good's production.
C) the private market will generally produce the efficient amount of a public good.
D) it is difficult to make people pay for a public good, and thus private markets will tend not to produce it.
E) too many people will over- consume a public good.