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': 'Essential fructosuria is due to deficiency of \nSelect and explain. \nA. b-galactosidase, B. Aldolase-B, C. Fructokinase, D. Aldose reductase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Fructosuria is a benign metabolic defect due to deficiency of fructokinase. There is no abnormality in other than excretion of fructose in urine.Ref: DM Vasudevan, 7th edition, page no: 138', 'role': 'assistant'}]