When government tax revenues change automatically and in a countercyclical direction over the course of the business cycle, this is an example of:

The case on textbook publishers shows that

A) if imports are allowed, price discrimination is difficult or impossible. B) if imports are allowed, price discrimination is possible. C) publishers have a difficult time identifying the groups involved. D) publishers should not migrate to electronic textbooks.

When the expected rate of inflation is added to the real interest rate, the result is called the:

A. preferred rate. B. nominal interest rate. C. adjustment rate. D. differential rate.