While driving, the car barely slows when you press the brake pedal. Which TWO actions are correct for reducing speed? Select TWO

1. ①Immediately switch off the engine
2. ②Turn on the hazard lights and shift down one gear at a time to slow down with the engine brake
3. ③Apply the parking brake gradually, not all at once, to reduce speed
4. ④Put the gear lever in neutral (N) to disconnect the engine from the wheels