challenge: What was the intended operational role of the British K-class submarine?
  
  A. To conduct reconnaissance and intelligence gathering behind enemy lines
  B. To operate with the surface fleet, sweeping ahead of it in a fleet action and ambushing the enemy as it retreated
  C. To operate independently, attacking enemy shipping in the open ocean
  D. To operate as a coastal defense force, defending British ports from enemy attack
  Answer: 