A U.S. importer that purchased merchandise from a south korean firm would be exposed to a net exchange gain on the unpaid balance if the:
a. dollar weakened relative to the korean won and the won was the denominated currency.
b. dollar weakened relative to the korean won and the dollar was the denominated currency.
c. dollar strengthened relative to the korean won and the won was the denominated currency.
d. dollar strengthened relative to the korean won and the dollar was the denominated currency.