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
Marquios disease not seen is 
Select and explain. 
A. Corneal opacity, B. Mental retardation, C. Stunted growth, D. Absent clavicle
B: Mental retardation
Answer: B: Mental retardation 
Explanation: 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>