In the IS-LM Model,the Implicit Assumption Made About Aggregate Supply

Multiple Choice

In the IS-LM model,the implicit assumption made about aggregate supply was that the

A) aggregate supply schedule was vertical because prices were flexible.
B) aggregate supply schedule was horizontal because prices were fixed.
C) aggregate supply schedule was upward sloping to the right because wages and prices were fixed.
D) supply of output was fixed.
E) none of the above.