An emission fee levied against polluting firms will tend to shift the:

An increase in Swiss prices will cause:

A. an increase in the demand for U.S. dollars and an increase in the exchange rate of Swiss francs per dollar. B. a decrease in the demand for U.S. dollars and a decrease in the exchange rate of Swiss francs per dollar. C. an increase in the supply of U.S. dollars and a decrease in the exchange rate of Swiss francs per dollar. D. a decrease in the supply of U.S. dollars and an increase in the exchange rate of Swiss francs per dollar.

Consider the following choices. Which of the following choices is correct?

A. Expansions have become shorter in the second half of the twentieth century compared to the first half B. Recessions were more severe and lasted longer int he first half of the twentieth century and became shorter and milder in the second half C. Recessions lasted for a shorter period of time in the first half of the twentieth century than in the second half. D. Both expansions and recessions last for about the same period of time in the second half of the twentieth century