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
The pontic that should be used in the posterior
mandibular area is described by the term 
Select and explain. 
A. Marble contact, B. Modified saddle, C. Saddle, D. Sanitary
D: Sanitary
Answer: D: Sanitary 
Explanation: None