Refer to the diagram, where variable inputs of labor are being added to a constant amount of property resources. Average variable cost will be at a minimum when the firm is hiring:

If the value of a dollar rises in terms of yen, the dollar has ________ and the yen has ________

A) appreciated; appreciated B) appreciated; depreciated C) depreciated; appreciated D) depreciated; depreciated

Foreign exchange rates tend toward equality around the world because of the actions of

a. central banks b. stock markets c. commodity markets d. the World Bank e. arbitrageurs