Which statement most accurately describes Acute gastroenteritis?

A. A glucose-electrolyte solution that promotes intestinal sodium and water absorption. B. An upper-airway viral illness characterised by barking cough and inspiratory stridor. C. Acute diarrhoeal illness with risk of dehydration, especially in infants and young children. D. Telescoping of one bowel segment into another, causing episodic pain and obstruction.