How should a driver execute a slope start on a steep incline in an automatic transmission vehicle?

1. Shift from Neutral to Drive while revving the engine at 4000 RPM
2. Select Reverse gear to counteract forward gravity before shifting into Drive
3. Hold the vehicle with the footbrake or handbrake, apply gentle accelerator until forward drive is felt, then release the brake smoothly
4. Release the brake pedal completely and wait 5 seconds before touching the accelerator