Suppose that in 1999 you could purchase about 400 Greek drachmas (the former Greek currency, replaced by the euro in 2002) for a dollar. In 2000, you could purchase about 350 drachmas for a dollar. Which of the following best explain the changes that could have taken place between 1999 and 2000? Select one: O The dollar depreciated, increasing the trade balance O The dollar depreciated, decreasing the trade balance. O The dollar appreciated, decreasing the trade balance. O The dollar appreciated, increasing the trade balance