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': 'One of the following is not a requirement of an ideal denture cleanser: \nSelect and explain. \nA. Should be difficult to separate from denture fit surface, B. Should dissolve all denture deposits, C. Exhibit bactericidal effect, D. Non-toxic', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ideal requirements of denture cleanser:\n\nNon-toxic\nEasy to remove and should be harmless to patient.\nHarmless to the denture base materials and denture teeth.\nAble to dissolve all denture deposits such as calculus.\nExhibit bactericidal and fungicidal activity.', 'role': 'assistant'}]