This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics And Genetic Disorders, Subject name: Pediatrics
[{'content': 'This boy presented with noisy breathing, stiff immobile joints & mental retardation. What can be the probable cause? \nSelect and explain. \nA. Down syndrome, B. Hurler syndrome, C. Neurofibromatosis, D. Sturge weber syndrome', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. Hurler syndromeThe image above shows features of Gargoylism having coarse facial features. Children suffering from this have mental retardation and joint stiffness. These features are characteristics of Hurler syndrome.', 'role': 'assistant'}]