Which of the Following Best Describes Communism

Which of the following best describes communism?

A) an economic system in which there is a free market wherein supply and demand regulates the availability and price of goods and labor
B) an economic system in which private property is abolished with a system of common ownership
C) an economic system that envisions a greater role for the state in controlling the negative aspects of free markets and providing significant welfare benefits
D) an economic system that utilizes government intervention to balance out the excesses of a free market system