challenge: What are the dimensions of the runway at Sallisaw Municipal Airport?
  
  A. 5,000 by 100 feet (1,524 x 30 m)
  B. 4,006 by 75 feet (1,221 x 23 m)
  C. 4,500 by 80 feet (1,372 x 24 m)
  D. 3,500 by 60 feet (1,067 x 18 m)
  Answer: 