As of late 2012, what was the all-time high price for an ounce of gold?

At the original exchange rate an import quota

a. creates a surplus in the market for foreign-currency exchange, so the exchange rate rises. b. creates a surplus in the market for foreign-currency exchange, so the exchange rate falls. c. creates a shortage in the market for foreign-currency exchange, so the exchange rate rises. d. creates a shortage in the market for foreign-currency exchange, so the exchange rate falls.

A change in the quantity supplied of a good is represented as a:

A. movement along a supply curve. B. shift of a supply curve. C. movement along the supply function. D. shift of the supply function.