This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of carbohydrate, Subject name: Biochemistry
[{'content': 'Marquios disease not seen is \nSelect and explain. \nA. Corneal opacity, B. Mental retardation, C. Stunted growth, D. Absent clavicle', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Morquio syndrome is an inherited disease of metabolism in which the body is missing or doesn&;t have enough of a substance needed to break down long chains of sugar molecules called glycosaminoglycans (formerly called mucopolysaccharides).SymptomsAbnormal development of bones, including the spineBell-shaped chest with ribs flared out at the bottomCoarse facial featuresKnock-kneesLarge head (<a href=" spaced teeth</a>', 'role': 'assistant'}]