Which of the Following Statements Is True of Market Failures

Which of the following statements is true of market failures?

A) Market failures bolster the ability of economic markets to achieve a sound environmental policy.
B) Ad hoc attempts to repair market failures have proved to be environmentally adequate.
C) Market failures occur when abundant markets exist to create a price for important social goods.
D) Sacrificing the first generation of public goods as a means for gaining information on market failures is an ill-advised strategy.