Which of the Following Best Defines Communism

Which of the following best defines communism?

A) A political and economic system in which there is common ownership of property and all people are considered equal
B) An economic system based on private ownership of property and competition in producing and selling goods and services
C) An economic system that combines private ownership of property and market competition
D) A political and economic system in which the state controls the lives of citizens but permits some degree of individual freedom
E) A political system in which the government controls almost every aspect of people's lives