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
[{'content': 'Modified ridge lap is the pontic of choice in: \nSelect and explain. \nA. Maxillary anteriors, B. Mandibular posteriors, C. Maxillary posteriors, D. Both 1 & 3', 'role': 'user'}, {'content': 'Answer: D \nExplanation: In the mandibular posterior region where esthetics is not a major consideration, spheroidal pontic is\xa0 the design of choice because of its contour.\nIn the maxilla, modiﬁed ridge lap design satisﬁes both esthetics and hygiene so it is the pontic design\xa0 of choice in both anterior and posterior region.', 'role': 'assistant'}]