Which of the Following Is True with Respect to Keynesian

Which of the following is true with respect to Keynesian economic policy?

A) Keynesian economic policy relies on government taxes and adjustments to the money supply to control inflation and unemployment.
B) Keynesian economic policy relies on tax cuts and expenditure increases by government to control inflation and unemployment.
C) Keynesian economic policy uses the money supply to control inflation and unemployment.
D) Keynesian economic policy relies on the generosity of private charities to address the worst effects of economic downturns.