When driving a commercial vehicle in dense fog, why should you use low-beam headlights rather than high-beam headlights?

1. High beams reflect off water droplets in the fog directly back into the driver's eyes, creating blinding white glare and reducing vision to zero
2. High beams cause the fog to turn into ice on the road
3. High beams drain the truck battery within 5 minutes
4. High beams extinguish the fog lights automatically