challenge: Why was the Casey Jones State Trail named after railroad engineer Casey Jones?
  
  A. He was instrumental in the construction of the railroad in southwestern Minnesota
  B. He was a prominent figure in the development of the Coteau des Prairies region
  C. He had no connections to Minnesota, but the trail was the first abandoned railroad grade acquired by the state
  D. He was a renowned Minnesotan railroad engineer
  Answer: 