Will the following be suppliers or demanders of us dollars

Question

Will the following be suppliers or demanders of U.S. dollars in foreign exchange markets?

1. A U.S. tourist in Latin America. ANSWER.) 
2. A German foreign exchange trader who believes that the dollar exchange rate will fall. ANSWER.)
3. A U.S. foreign exchange trader who believes that the dollar exchange rate will fall. ANSWER.)
4. A Costa Rican tourist in the United States. ANSWER.)
5. A Russian capitalist who wants to protect his wealth from expropriation. ANSWER.)
6. A British investor in the United States. ANSWER.)