This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lipids, Subject name: Biochemistry
[{'content': 'A 12-year-old intellectually disabled boy having short stature, protuberant abdomen with umbilical hernia, prominent forehead. His vision is normal. His parents are normal. What is metabolic defect in this disorder? \nSelect and explain. \nA. L-Iduronidase, B. Iduronate Sulfhatase, C. Aryl Sulfatase B, D. Beta Glucoronidase', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. Iduronate Sulfatase* Hunters Disease (MPS-II)* Distinguishing features are vision normal as there is no corneal clouding. Males are affected', 'role': 'assistant'}]