Continuous use of the vehicle's brakes on a steep and prolonged descent may cause:

1. AOverheating of the brakes and weak braking compared with the normal state.
2. BContinuous use of the brakes has no effect whatsoever on braking.
3. CExcessive cooling of the brakes and weaker braking than required.
4. DHeating of the brakes and stronger braking than required.

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