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
Which of the following is reducing sugar 
Select and explain. 
A. Sucrose, B. Isomaltose, C. Trehalose, D. All of the above
B: Isomaltose
Answer: B: Isomaltose 
Explanation: Sucrose and Trehalose are non reducing sugars.
Isomaltose is a disaccharide similar to maltose but with α (1,6) linkage instead of α (1,4) linkage.