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
Classification of partially edentulous arches 
Select and explain. 
A. Should be universally accepted, B. Should serve as a guide to the type of design to be used, C. Should permit differentiation between tooth supported and tooth & tissue supported partial denture, D. All the above
D: All the above
Answer: D: All the above 
Explanation: None