Which of the following is an injection into the economy?

The theory of PPP suggests that if one country's price level rises relative to another's, its currency should

A) depreciate in the long run. B) appreciate in the long run. C) depreciate in the short run. D) appreciate in the short run.

Which of the following is generally an opportunity cost of investment in human capital?

a. future job security b. forgone present wages c. increased earning potential d. All of the above are correct.