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
[{'content': 'A 3-month-old child presents with intermittent strider. Most likely cause is – \nSelect and explain. \nA. Laryngotracheobronchitis, B. Laryngomalacia, C. Respiratory obstruction, D. Foreign body aspiration', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Laryngomalacia \n\nLaryngomalacia is the most common congenital laryngeal anomaly.\nIt is the most common cause of stridor in infants and children.\nSymptoms appear in the first 2 weeks of life and increase in severity for up to 6 months.\nThe typical presentation is inspiratory stridor which is exacerbated by any exertion (crying, agitation, feeding), supine position, and viral infection of URT.\nStridor is due to partial collapse of a flaccid supraglottic airway during inspiration.', 'role': 'assistant'}]