The nurse working in a health care provider's office is caring for a child with type 1 diabetes who has an elevated blood glucose despite taking insulin. The child presents with a sore throat, runny nose, and a cough. Which statement made by the nurse is most appropriate?

A. While expired insulin can reduce effectiveness, the immediate concern is hyperglycemia during illness, not insulin quality. B. An emergency room visit is not automatically required for mild viral illness with elevated glucose unless there are signs of diabetic ketoacidosis (DKA), such as vomiting, abdominal pain, or lethargy. C. Decreasing carbohydrate intake is not advised because children still need calories for energy; adjusting insulin rather than restricting food is the correct approach. D. "You will need to check your glucose more often while you are sick" is the most appropriate guidance. Illness can trigger stress hormones that raise blood glucose levels, and frequent monitoring helps prevent complications, including DKA. Sick-day management also includes maintaining hydration and continuing insulin doses as prescribed.