It Is Difficult to Empirically Test Alternative Macroeconomic Models Against

Multiple Choice

It is difficult to empirically test alternative macroeconomic models against one another because

A) macroeconomic models do not predict the same outcomes from policies.
B) macroeconomic models differ in ways that are hard to standardize for.
C) macroeconomic models cannot be expressed in mathematical terms.
D) macroeconomic models are always expressed in scientific terms.