Under California law, what is the minimum liability insurance coverage a driving school vehicle must carry?

1. 15/30/5 minimum like personal vehicles
2. $$150,000/$300,000 bodily injury and $50,000 property damage per CVC §11103
3. The vehicle must carry at least $100,000/$300,000 bodily injury and $50,000 property damage or a combined single limit of $500,000
4. No specific minimum; any valid insurance is sufficient