Each point on a production possibilities frontier requires full employment of resources

To test the null hypothesis of a unit root, the ADF test

A) has higher power than the so-called DF-GLS test. B) uses complicated interative techniques. C) cannot be calculated if the variable is integrated of order two or higher. D) uses a t-statistic and a special critical value.

When a $500 check is cleared from Bank A to Bank B, the M2 money supply:

a. Increases permanently. b. Falls permanently. c. Does not change.