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
All are the requirements of the classification of a partially edentulous arch; Except 
Select and explain. 
A. It should permit immediate visualization of the type of partially edentulous arch that is being considered., B. It should permit immediate differentiation between the tooth-supported and the tooth- and tissue-supported removable partial denture., C. It should be universally acceptable., D. None of the above
D: None of the above
Answer: D: None of the above 
Explanation: None