Being Able to Measure the Behavior of the Economy with Statistics

Multiple Choice

Being able to measure the behavior of the economy with statistics such as GDP

A) is useful only in the accounting sense.
B) is all that is necessary in order for us to be able to understand macroeconomics.
C) can be helpful in developing macroeconomic science, but is not useful for policymaking.
D) is a crucial step toward developing the science of macroeconomics.