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
True statement about fish belly pontic is: 
Select and explain. 
A. The gingival surface of pontic is convex both buccolingually and mesiodistally., B. The gingival surface of pontic is concave both buccolingually and mesiodistally., C. The gingival surface of pontic is concave buccolingually and convex mesiodistally., D. The gingival surface of pontic is concave mesiodistally and convex buccolingually.
A: The gingival surface of pontic is convex both buccolingually and mesiodistally.
Answer: A: The gingival surface of pontic is convex both buccolingually and mesiodistally. 
Explanation: None