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: Pathology
[{'content': 'The term dilaceration refers to \nSelect and explain. \nA. A deformity of a tooth consisting of a sharp bend in the root, B. Abrasions on two surfaces of a single tooth, C. A root or tooth that is split into two, D. A tooth that is fractured at two or more places', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]