challenge: What was the primary method used by Houghton Mifflin to print the first edition of The Hobbit in the United States?
  
  A. Printing from plates etched from a photo-enlargement of the Allen & Unwin first edition
  B. Binding of British-printed sheets with American covers
  C. Typesetting and printing from original manuscripts
  D. Direct import of sheets from George Allen & Unwin
  Answer: 