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: Radiology
[{'content': 'Location and radiographic density make a talon cusp appear similar to: \nSelect and explain. \nA. Dilacerations, B. Concrescence, C. A supernumerary tooth, D. Dens in dente', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]