An example of a command economy was the Soviet Union during the Cod War, when it had Communism as the economical system.
In Communist economies, or in command economies generally the planning is done by the government - we call it central planning (answer B)
I had the same question. It is not B it is D.
The plan sought to revolutionize credit and marketing arrangements for staple crops, particularly cotton. A prominent version of the Subtreasury Plan required the federal government to construct warehouses, or subtreasuries, in counties that marketed crops with an annual value of $500,000.
