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': 'In a child, foreign body in lung – \nSelect and explain. \nA. Rigid bronchoscopy, B. Chest x–ray, C. Flexible endoscopy, D. Direct laryngoscopy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Treatment of choice is removal of foreign body by rigid bronchoscope with appropriate antibiotics.', 'role': 'assistant'}]