Which of the Following Was Implied by the Economic Theories

Which of the following was implied by the economic theories promoted by John Maynard Keynes?

A) The role of business and economic production was to serve the interests of the state.
B) Human nature was best served by an economy made up of many small producers in competition with one another.
C) The ideal human society was one in which everyone contributed what they could and took what they needed.
D) At times states needed to compensate for failures in the market by stimulating the economy with job creation and increasing supply of currency.