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': 'In the mandibular posterior region, which of the following\ndesign is indicated for the pontic in the fixed bridge: \nSelect and explain. \nA. Spheroidal, B. Modified ridge lap, C. Ridge Lap, D. Conical', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]