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
Not an aldose sugar 
Select and explain. 
A. Erythrose, B. Glucose, C. Fructose, D. Galactose
C: Fructose
Answer: C: Fructose 
Explanation: Aldose sugars glyceraldehyde, erythrose, arabinose, xylose, ribose, glucose, galactose, mannoseRef: DM Vasudevan, 7th edition, page no: 76