How should a bus driver approach and negotiate a sharp downhill curve on an Alpine mountain road?

1. Accelerate rapidly into the curve and slam on the service brakes at the sharpest point
2. Brake smoothly before the curve, select the appropriate low gear, and gently accelerate through the turn after passing the apex
3. Shift the transmission into neutral and coast through the curve to save engine wear
4. Rely entirely on electronic stability control to steer the vehicle around the bend