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': 'Hydroquinone is added to methyl methacrylate\nmonomer \nSelect and explain. \nA. To prevent polymerization during storage, B. To initiate release of free radicals, C. To enable polymerization reaction at room temperature, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]