Under Regulation (EC) No 561/2006, what is the maximum standard daily driving time permitted for a bus driver, and how many times per week may it be extended to 10 hours?

1. Maximum 8 hours daily; no extensions permitted
2. Maximum 9 hours daily; may be extended to a maximum of 10 hours not more than twice in a week
3. Maximum 10 hours daily; may be extended to 12 hours once a week
4. Maximum 9 hours daily; may be extended to 11 hours up to three times a week