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': 'Elevated occlusal portion of a tooth which divides occlusal surface is known as: \nSelect and explain. \nA. Cusp., B. Ridge., C. Tubercle., D. Cingulum.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ridges like transverse ridge or oblique ridges are the alevated occlusal portion of a tooth which divides occlusal surface.', 'role': 'assistant'}]