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: Dental
[{'content': 'Indium is added to amalgam? \nSelect and explain. \nA. It reduces mercury release during mastication, B. It reduces mercury release during polishing, C. It reduces gamma phase, D. It reduces gamma 2 phase', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]