What does it mean when a vehicle in oncoming traffic has its turn signal on indicating a left turn across your path?

1. It is safe to proceed because they see you
2. Treat the signal as a warning only — slow down, cover the brakes, adjust lane position, and be ready to stop or swerve in case the driver turns in front of you
3. Speed up to clear the intersection first
4. Flash your high beam and continue at speed