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
Which of the following is not required during determination of path of placement and removal: 
Select and explain. 
A. Retentive areas, B. Esthetics, C. Interference, D. Remaining teeth
D: Remaining teeth
Answer: D: Remaining teeth 
Explanation: None