According to Adam Smith, which of the following is necessary for the proper functioning of the market system? A. For markets to work, people must be free to pursue their self-interest. B. For markets to work, people should take into account how their decisions affect society as a whole. C. For markets to work, people and the government need to coordinate their decisions. O D. For markets to work, the government should help citizens make the right decisions, According to Adam Smith, which of the following is the instrument the invisible hand uses to direct economic activity? O A. financial markets O B. prices O C. costs OD. government regulations