In Some Macroeconomic Analyses, It Is Common to Treat the Level

Multiple Choice

In some macroeconomic analyses, it is common to treat the level of productivity as roughly constant. This is a justifiable assumption in

A) macroeconomics but not microeconomics.
B) both the long run and the short run.
C) the long run.
D) the short run.
E) neither the long run nor the short run.