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': 'Supernumerary teeth are formed due to abnormality in: \nSelect and explain. \nA. Initiation., B. Proliferation., C. Morphodifferentiation., D. Histodifferentiation.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Abnormal initiation may result in the development of single or multiple supernumerary teeth.', 'role': 'assistant'}]