Read the following context and choose the best option to answer the question.
Context: 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 .
Question: Why do my dentist and his wife currently live in separate houses ?
Options: 
A. None of the above choices .
B. His wife is currently working in another state .
C. My dentist is still trying to sell his old house .
D. It is just a trial separation period before divorce .


B