What must you do if your right front tyre suddenly suffers a blowout while driving at 90 km/h on a national highway?

1. Firmly grip the steering wheel, maintain directional control, ease off the accelerator gradually, and brake gently only after the vehicle has slowed down
2. Slam hard on the footbrake immediately and steer sharply onto the left shoulder
3. Yank the handbrake lever to stop the rear wheels instantly
4. Shift immediately into reverse gear