In a Market Economy, the Three Economic Questions Are Answered

In a market economy, the three economic questions are answered by which of the following?

A) Prices determined by the interaction of the forces of supply and demand.
B) A cartel of major transnational corporations, government agencies, and consumer advocates.
C) A trilateral commission of major corporations, the military, and university professors.
D) A central authority such as people's committee, a government agency, or a dictator.