A driver takes a reduced weekly rest period of 28 hours in Week 1. By when must the compensatory rest be taken, and how many continuous hours must be added to another rest period of at least 9 hours?

1. 17 hours of compensatory rest, taken en bloc before the end of Week 4
2. 12 hours of compensatory rest, taken en bloc before the end of Week 2
3. 17 hours of compensatory rest, split across Week 2 and Week 3
4. 24 hours of compensatory rest, taken before the end of the current month