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': 'Commonest sign of intrabronchial foreign body in children is - \nSelect and explain. \nA. Cough, B. Wheeze, C. Dyspnoea, D. Stridor', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Cough", 'role': 'assistant'}]