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 conditioning agent  should not be used with MTA? \nSelect and explain. \nA. EDTA, B. Citric acid, C. Doxycycline, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: As EDTA interferes with hard tissue generation capacity of MTA.', 'role': 'assistant'}]