This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
False regarding croup is ? 
Select and explain. 
A. Disease include epiglottis, laryngitis, laryngotrachictis, B. Brassy cough is main presenting feature, C. Causes upper airway obstruction, D. All of above
C: Causes upper airway obstruction
Answer: C: Causes upper airway obstruction 
Explanation: Ans. is 'c' i.e., Causes upper airway obstruction Croup is variety of condition which include acute epiglottis, laryngitis, trachiobronchitis. Infection of lower respiratory tract. Brassy cough main presenting feature. Treatment Humidified I.V. fluid Antibiotics Nebulisation Steroid.