What is a 'reduced daily rest period' under Regulation (EC) No 561/2006, and what is the maximum number of times it may be taken between any two weekly rest periods?

1. A rest period of at least 9 hours but less than 11 hours, allowed at most 3 times between any two weekly rest periods without requiring compensation
2. A rest period of at least 8 hours but less than 11 hours, allowed at most 2 times between any two weekly rest periods with mandatory compensation
3. A rest period of at least 9 hours but less than 10 hours, allowed at most 2 times between any two weekly rest periods
4. A rest period of at least 9 hours, allowed at most 4 times provided the driver compensates the missing hours before the end of the week