challenge: What is unique about the London School of Economics (LSE) in terms of its economic history program?
  
  A. It retains a separate economic history department and stand-alone undergraduate and graduate programme in economic history
  B. It is the only institution that offers economic history as an online course
  C. It is the only institution that offers economic history as a minor
  D. It has closed its economic history department and integrated it into the history department
  Answer: 