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': 'Initiator for self cure composite is: \nSelect and explain. \nA. Tertiary amine., B. Benzoyl peroxide., C. Methyl ether., D. N, N dimethyl paratoludine.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]