23. A Keynesian economist believes that
(A) if the economy was left alone, it would rarely operate at full employment.
(B) the economy is self-regulating and always at full employment.
(C) the economy is self-regulating and will normally, though not always, operate at full
employment if monetary policy is not erratic.
(D) the economy is self-regulating and will normally, though not always, operate at full
employment if fiscal policy is not erratic.