All of the Following Statements Are Correct Except Which One

All of the following statements are correct except which one?

A) U.S. currency is now accepted, with relatively few exceptions, in most major industrialized nations.
B) World capital markets have now advanced to allow relatively easy borrowing across borders.
C) Black or curb markets frequently offer the traveler a better deal than legitimate enterprises.
D) Both a and b.
E) Both b and c.