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 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: Ans. is 'a' i.e., Rigid bronchoscopy o Treatment of choice is removal of foreign body by rigid bronchoscope with appropriate antibiotics.", 'role': 'assistant'}]