Which of the following is MOST true regarding a pediatric patient with a URI and the risk of anesthesia?

A) Airway reactivity has been demonstrated to occur in the lab, but has not been definitively shown to occur
B) Increased incidence of adverse airway events have been demonstrated in children to last for 2-4 weeks after the URI
C) The best approach is to cancel all children with a URI presenting for elective surgery
D) There are no known affects of a URI on the lower airways