<prompt> 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?L-IduronidaseIduronate SulfhataseAryl Sulfatase BBeta Glucoronidase  <response>: Ans. B. Iduronate Sulfatase Hunters Disease MPS-II Distinguishing features are vision normal as there is no corneal clouding. Males are affected 