challenge: What role did Frank Elm play in the U.S. Olympic Teams?
  
  A. Assistant in 1976 and Head Coach in 1968 and 1980
  B. Assistant in 1968 and 1976, and Head Coach in 1980
  C. Head Coach in 1968 and Assistant in 1976
  D. Head Coach in 1968 and 1976, and Assistant in 1980
  Answer: 