challenge: What was the fate of the Halcyon-class minesweeper Sphinx after being attacked by enemy aircraft on 3 February 1940?
  
  A. It was sunk immediately after the attack
  B. It remained afloat and was towed by Halcyon, but eventually capsized and sank after taking in too much water
  C. It was captured by the enemy
  D. It was repaired and returned to service
  Answer: 