For Each of the Following,state Whether It Creates a Demand

For each of the following,state whether it creates a demand for or a supply of U.S.dollars:
(a)A Japanese automobile firm builds an assembly plant in Ohio.
(b)A U.S.importer purchases a shipload of Saudi Arabia oil.
(c)A U.S.student spends a summer in England studying in Oxford.
(d)A French exporter ships products to Argentina using an American freighter.
(e)Currency traders feel that the value of the U.S.dollar will fall in the near future and act on that feeling.