While merging, when should you make the move and enter a gap?

• As soon as you see a gap in the lane.
• As soon as you feel it is safe and legal.
• As soon as you pass the solid white line of the acceleration lane.
• Both B and C
  Explanation:

  "When merging, you must make sure it is both safe and legal to move into a gap. Make your move after passing the solid white line of the acceleration lane and maintain a speed at or near that of the other vehicles to merge smoothly."