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': 'True about laryngomalacia -a) Most common cause of congenital stridorb) Inspiratory stridor normal on cryingc) Prone position worsens conditiond) 50% of patients requires surgerye) Omega shaped epiglottis \nSelect and explain. \nA. a, B. b, C. ab, D. ae', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]