C..
I could only ever take 5 business days off from my job, so I would say 7 or 8 if we tacked on each weekend.
Honestly, though, I enjoyed the vacations that were shorter and more frequent.... The best vacation we had were 4 days long - we would leave on Fri morning and get back Mon afternoon. Then no one gets tired of each other... it's not long enough that everyone routine gets all wonky and hard to get back on and we didn't dirty enough laundry that it took me more than until after work tuesday to get all the laundry done!