challenge: Who were the members of the Ptarmigan Climbing Club that completed the first traverse of Ptarmigan Traverse in July 1938?
  
  A. Dale Cole, Bob Grant, Mike Hane, Erick Karlsson, Tom Myers
  B. Bill Cox, Calder Bressler, Ray W. Clough, Tom Myers
  C. Dale Cole, Bob Grant, Mike Hane, Erick Karlsson, Tom Miller
  D. Bill Cox, Calder Bressler, Ray W. Clough, Tom Miller
  Answer: 