If a country named Lower Slobovia decided to use U.S. dollars as a medium of exchange and therefore withdrew $10 billion in cash from its transaction deposits in the U.S., what would happen to the U.S. monetary base? What would happen to depository institutions' actual reserve holdings? What would happen to U.S. financial institutions' net excess reserves if the Lower Slobovians withdrew their money from bank deposits subject to a 10 percent reserve requirement? What would probably happen to the U.S. money supply?