If the exchange rate between the Australian dollar and the U.S. dollar, $:A$, changes from A$1.60 to

Question:

If the between the Australian dollar and the U.S. dollar, $:A$, changes from A$1.60 to A$1.50, then
a. The Australian dollar has appreciated, and the Australians will find U.S. goods cheaper.
b. The Australian dollar has appreciated, and the Australians will find U.S. goods more expensive.
c. The Australian dollar has depreciated, and the Australians will find U.S. goods more expensive.
d. The Australian dollar has depreciated, and the Australians will find U.S. goods cheaper.
Exchange Rate
The value of one currency for the purpose of conversion to another. Exchange Rate means on any day, for purposes of determining the Dollar Equivalent of any currency other than Dollars, the rate at which such currency may be exchanged into Dollars...