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: ENT
[{'content': 'MC cause of intermittent stridor in a 10 days old child is - \nSelect and explain. \nA. Laryngomalacia, B. Foreign body, C. Vocal nodule, D. Hypertrophy of turbinate', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]