Which of the Following Does Keynesian Economic Policy Hold to Be

Which of the following does Keynesian economic policy hold to be true?

A) Increasing tax rates will stimulate the economy.
B) Government spending should focus primarily on social welfare.
C) The key task for fiscal policy is to stimulate the supply of goods.-Consider This: Keynesian economic policy concerns fiscal economic policies based on government's ability to spend and tax.
D) Government should take the responsibility to stimulate the economy when it is lagging.