Which of the Following Statements About Economic Decision-Making Is True

Which of the following statements about economic decision-making is true?

A) In a market-directed economy,the micro-level decisions of individual producers and consumers determine the macro-level decisions.
B) Government planning usually works best when economies become more complex and the variety of goods and services produced is fairly large.
C) The United States may be considered a pure market-directed economy.
D) Command economies usually rely on market forces to determine prices.