Which of the following driving offences result in four demerit points?

• Following too closely (tailgating)
• Failing to stop at a pedestrian crossover
• Failing to stop at a railway crossing
• Both A and B
  Explanation:

  "The following driving offenses result in four demerit points: (1) Exceeding the speed limit by 30 to 49 km/h (2) Following another vehicle too closely (tailgating) (3) Failing to stop at a pedestrian crossover."