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
Arch- fixed partial denture is: 
Select and explain. 
A. Modified sanitary pontic., B. Modified ridge lap pontic., C. Modified spheroidal pontic., D. Ovate pontic.
A: Modified sanitary pontic.
Answer: A: Modified sanitary pontic. 
Explanation: None