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19. The U.S. has a more serious debt problem than Japan because a. Japanese debt remains in its real economy where it cannot lead to hyperinflation problems. b. U.S. debt remains in the financial economy where it can lead to serious inflation problems. c. U.S. debt is held by foreigners, and U.S. M2 has been growing much more quickly than Japan's. d. Japanese debt is held by foreigners, and its M2 has been growing more quickly than U.S. M2. JAll of the answers are correct