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': "Bone adjacent to periodontal ligament that contains a great number of sharpey's fibres is known as \nSelect and explain. \nA. Lamina dura, B. Bundle bone, C. Lamina propria, D. Lamina densa", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]