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': 'Inorganic content of cementum is: \nSelect and explain. \nA. Less than bone, B. More than bone, C. Equal to that of bone, D. More than that of enamel', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]