challenge: In the game Speculator, how is the passage of time simulated in relation to real-time?
  
  A. 1 minute of playing time represents 6 minutes of time within the game.
  B. 1 minute of playing time represents 4 minutes of time within the game.
  C. 1 minute of playing time represents 2 minutes of time within the game.
  D. 1 minute of playing time represents 10 minutes of time within the game.
  Answer: 