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': 'Which of the following results, if ZOE and Ca(OH)2 liners are used together? \nSelect and explain. \nA. No reparative dentin formation, B. Exothermic heat released after the reaction will damage the pulp, C. High solubility of combination, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Eugenol and calcium hydroxide cannot be incorporated into the same formulation, because eugenol rapidly chelates calcium ions in a strongly exothermic reaction.\nTherefore, the choice of a eugenol-based versus calcium hydroxide-based liner is based on the relative depth of the tooth preparation.', 'role': 'assistant'}]