When a front steering tire suffers a sudden high-speed blowout on an expressway, what is the critical steering and braking response required of the bus driver?

1. Grip the steering wheel firmly with both hands to resist the severe lateral pulling force, refrain from slamming on the brakes, ease off the accelerator, and gently apply intermittent brake pressure only after directional control is stabilized
2. Slam on the service brakes with maximum pedal force immediately and jerk the steering wheel in the opposite direction
3. Pull the emergency parking brake handle up to its maximum locked position instantly
4. Shift into reverse gear to stop the forward rotation of the wheels