This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
All are reducing sugars except- 
Select and explain. 
A. a) Sucrose, B. b) Lactose, C. c) Glucose, D. d) Fructose
A: a) Sucrose
Answer: A: a) Sucrose 
Explanation: Explantion- Non reducing sugars- Disaccharides Sugar Units Linkage Trehalose (Sugar of insect hemolymph, yeast and fungi) aDGlucose + aDGlucose a1 ------- a1 linkage Sucrose (Cane Sugar) aDGlucose +b DFructose a1 ------- b2 linkage