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': 'All of the following is used as accelerator in zinc oxide eugenol cement except \nSelect and explain. \nA. Acetic acid, B. Zinc acetate dehydrate, C. Calcium chloride, D. Bromoglycerine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]