challenge: What was the composition of the Allied troops sent to Norway during Plan R 4?
  
  A. 20,000 troops from the United States and Canada
  B. 30,000 troops from Britain and the Soviet Union
  C. Only British and Norwegian troops
  D. 24,500 troops from Britain, Norway, France, and Poland, including marine infantry, French Foreign Legionnaires, and Polish mountain troops
  Answer: 