Which statement about rollover prevention is correct?

1. This statement confuses the tested combination-vehicle rule with an unrelated CDL topic.
2. This answer would create an unsafe coupling, braking, turning, or inspection habit.
3. This choice is not supported by the Texas CDL handbook or FMCSA combination-vehicle standards.
4. Ramp and curve speeds may need to be below passenger-car advisory speeds for a combination vehicle.