Under GB domestic rules, a bus driver's working day will be 9 hours (8 hours 30 minutes or more). Which pattern of breaks correctly satisfies the break requirement for that day?

1. A single break of at least 30 minutes taken after 5 hours 30 minutes of driving
2. A single 20-minute break taken after 3 hours of driving, with no further break for the rest of the shift
3. No break at all, provided total driving stays under the 10-hour daily driving limit
4. A break taken only during the final 30 minutes of the shift, after all driving has finished