An 11-Year-Old Child Who Has a History of Asthma Is

An 11-year-old child who has a history of asthma is brought to the family practice clinic by a parent who reports that the child has white plaque over the inside of the mouth and coating the tongue.Which question by the nurse would elicit the most useful information?

A) "Are you brushing your teeth and tongue regularly?"
B) "Do you rinse your mouth after using your inhaler?"
C) "Have you ever had something like this before?"
D) "When was the last time you went to the dentist?"