In a Continuously Variable Transmission (CVT) system used in automatic scooters, what are the primary components of the front drive pulley (variator)?

1. The movable drive face, the ramp plate, the roller weights (sliders), and the drive pulley face.
2. The centrifugal clutch shoes, the clutch outer drum, and the compression torque spring.
3. The gear shifting forks, the drum selector, and the dog gears.
4. The stator coil, the magnetic rotor flywheel, and the pulser sensor.