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: Unknown
[{'content': 'Mutarotation refers to change in: \nSelect and explain. \nA. pH, B. Optical rotation, C. Conductance, D. Chemical properties', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Mutorotation refers to the change in the specific optical rotation representing the interconversion of α- and β- anomers of D-glucose to an equilibrium.', 'role': 'assistant'}]