challenge: What was the original purpose of the Bawtry to Haxey railway line?
  
  A. To serve the developing pits in South Yorkshire
  B. To convey coal from a new colliery at Tickhill to Grimsby for export
  C. To transport passengers between Bawtry and Haxey
  D. To connect Nottinghamshire, Lincolnshire, and Yorkshire to the main railway network
  Answer: 