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 hypertrophy, cementum formed has: \nSelect and explain. \nA. More strength., B. Less strength., C. No effect on strength., D. Number of cells increases.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]