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
One of the following is not a requirement of an ideal denture cleanser: 
Select and explain. 
A. Should be difficult to separate from denture fit surface, B. Should dissolve all denture deposits, C. Exhibit bactericidal effect, D. Non-toxic
A: Should be difficult to separate from denture fit surface
Answer: A: Should be difficult to separate from denture fit surface 
Explanation: Ideal requirements of denture cleanser:

Non-toxic
Easy to remove and should be harmless to patient.
Harmless to the denture base materials and denture teeth.
Able to dissolve all denture deposits such as calculus.
Exhibit bactericidal and fungicidal activity.