challenge: What can be said about the origins of the Ecclefechan tart?
  
  A. It was created by a famous Scottish chef in the 18th century
  B. There is no clear information about how it originated
  C. It was brought to Scotland by French immigrants in the 19th century
  D. It was invented by a local baker in Ecclefechan in the 20th century
  Answer: 