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
The conversion of glucose-6-P to fructose-6-P is an example of which of the following reactions: 
Select and explain. 
A. Phosphate transfer, B. Isomerisation, C. Dehydration, D. Aldol cleavage
B: Isomerisation
Answer: B: Isomerisation 
Explanation: None