A school-aged child is diagnosed with streptococcal pharyngitis. What of the following clinical manifestations should the nurse expect?

A. Rest is recommended until the child recovers, as exertion can worsen symptoms and delay healing. B. While streptococcal infections can lead to complications, a tooth abscess is not a typical concern. C. Completing the entire course of antibiotics is crucial to prevent complications such as rheumatic fever and glomerulonephritis. D. Swollen lymph nodes are common, but they typically do not obstruct the airway in streptococcal pharyngitis.