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': 'If the cemental overgrowth improves the functional quality of cementum, known as: \nSelect and explain. \nA. Cemental hypertrophy, B. Cemental hypoplasia, C. Cemental hyperplasia, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]