What is the correct way to handle an engine stall while executing a hill start on a steep incline?

1. Immediately apply the foot brake firmly to prevent backward rollback, pull the handbrake, engage neutral, restart the engine, and execute the hill start routine properly
2. Let the vehicle roll backwards freely down the hill to bump-start the engine
3. Release the brakes and steer into oncoming traffic
4. Jump out of the moving vehicle