Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: (CNN) What do the U.S. dollar, South African rand, the British pound, Indian rupee, Japanese yen and Chinese yuan have in common? They are among the currencies being used in Zimbabwe as a solution to the country's problems with hyperinflation. Since 2009, Zimbabwe has used other currencies in lieu of its own, which it abandoned after hyperinflation of more than 5,000 percent made it essentially worthless. This system of using multiple currencies has led to a deflation rate of -2.3%, according to Zimbabwe's bank governor. "We changed to a multiple currency system to stabilize, and inflation went down to 0% and it was magic," said the Zimbabwe Reserve Bank Governor, John Mangudya.Zimbabwe demonetized its own currency in 2009 due to hyper-inflationThe country's central bank issued 1 trillion, 10 trillion and 100 trillion dollar notesZimbabwe recovered from excessively high inflation to -2.3% deflation 
 Question:The U.S. dollar is the preferred currency in _ at present, but others are welcome.

Zimbabwe