challenge: What world record did Lieutenants Wead and Price set for Class C seaplanes on June 22–23, 1924?
  
  A. Distance (963.123 miles, 1,544.753 km)
  B. Duration (13 hours, 23 minutes, 15 seconds)
  C. Speed over 500 km (73.41 mph, 117.74 km/h)
  D. Speed over 1,500 km (74.17 mph, 118.96 km/h)
  Answer: 