What do alternating flashing amber lights on a school bus mean?

• That the school bus is going to speed up and overtake you.
• That the school is nearby.
• That the school bus is going to start flashing alternating red lights and the school bus is stopping to allow students to get on or off.
  Explanation:

  "When you approach a school bus from either direction (from the front or the rear), and it has alternating amber lights flashing, you must be ready to stop. This is a warning that the alternating red lights are going to begin flashing, and the school bus is stopping to allow students to get on or off."
• None of the above.