His wife and kids are staying in North Carolina for the year - she 's a resident professor at UNC ! He takes one look at my teeth and looks horrified . I ask him if he can do a filling and he says , " No filling .
According to the above context, choose the best option to answer the following question.
Question: Why do my dentist and his wife currently live in separate houses ?
Options:
- None of the above choices .
 - His wife is currently working in another state .
 - My dentist is still trying to sell his old house .
 - It is just a trial separation period before divorce .


His wife is currently working in another state .