What policy tools did Keynes suggest to use by the government and their function?

A. Fiscal policy when the government could spend more money out of its budget to lift the low demand during a recession.

B. All the answers are correct.

C. Monetary policy, where the central bank could print more money to lift the low demand in a recession.

D. Fiscal policy when the government could cut taxes out of its budget and allow households to use that money to consume or invest, thus to lift the low demand during a recession.