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 pontic designs doesn’t have mucosal contact: 
Select and explain. 
A. Ridge lap, B. Modified ridge lap, C. Ovate, D. Sanitary
D: Sanitary
Answer: D: Sanitary 
Explanation: None