How is a work diary entry affected if a driver's odometer malfunctions and they cannot record kilometre readings?

1. The driver may skip odometer entries until the odometer is repaired
2. The driver must note the malfunction in the work diary, record all other required information, and arrange repairs as soon as practicable
3. The driver must immediately stop driving until the odometer is repaired
4. The driver only needs to record the destination, not the distance