In a typical motorcycle charging system, what are the roles of the stator/alternator, rectifier and regulator?

1. The stator generates AC electricity, the rectifier converts it to DC, and the regulator controls the voltage supplied to the battery and electrical system
2. The stator stores fuel, the rectifier ignites the spark, and the regulator controls tyre pressure
3. The stator applies the brakes, the rectifier cools the engine, and the regulator adjusts valve clearance
4. The stator stores oil, the rectifier filters air, and the regulator adjusts the clutch cable