Which of the following statements correctly differentiates a communist economy from a socialist economy in terms of ownership and economic control?

1. In a communist economy, all means of production are owned and controlled by the state, aiming for a classless society.
2. In a socialist economy, key industries are owned by the state, but there is allowance for private ownership in certain sectors.
3. In a socialist economy, there is no government intervention in the economy, and all decisions are made by private enterprises.