A Fundamental Feature of Early Classical Macroeconomics Is That

Multiple Choice

A fundamental feature of early classical macroeconomics is that:

A) aggregate demand and aggregate income are usually unequal.
B) prices of inputs and outputs are usually relatively rigid.
C) the economy's level of employment can remain substantially below its natural level over a long period.
D) the economy can achieve full employment on its own, though there may be short periods in which employment falls below the natural level.