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': 'All are true regarding Laryngomalacia except - \nSelect and explain. \nA. Poor prognosis, B. Most common congenital abnormality, C. Stridor with cyanosis, D. Gets relieved in prone position', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]