Context: Cade and JB went to the dentist today . Lucky for us our dentist is one of my good friends from college . So on that note , my kids never really have had a problem getting their teeth cleaned ! Thank Goodness !

Question: What may be the reason for the kids not having a problem with a teeth cleaning ?
Options:
0. They are better with unfamiliar dentists .
1. They are familiar with the dentist .
2. None of the above choices .
3. They are brave children .
Answer: 1