Which of the following statements is true? Group of answer choices

The command system is known as socialism or communism.

In socialism, resources are owned by the government and the economic activity is coordinated by a central planning board. This means that what is produced, how much is produced and the prices that are charged for the output are determined by the central planning board.

There are still some mostly socialist countries in the world, like North Korea, Cuba, and Myanmar.

All of the above.

Only a) and b)