In John Maynard Keynes's Demand-Side Economic Theory, an Economic Recession

In John Maynard Keynes's demand-side economic theory, an economic recession can be shortened through

A) government spending programs.
B) the natural workings of the free-market system.
C) a raising of tariffs in the global economy.
D) a determination on the part of government not to spend any more than it receives in taxes.
E) tax cuts for the wealthy.