What Did Adam Smith Argue in the Wealth of Nations

What did Adam Smith argue in The Wealth of Nations ?

A) Self-interest acted as an "invisible hand" in the marketplace, automatically regulating the supply of and demand for services.
B) Mechanization would become the "invisible hand" and automation would eliminate human labor.
C) Wealth should be distributed evenly throughout society.
D) Inexorable natural laws controlled the social order.
E) A single tax would solve the nation's uneven distribution of wealth.