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': 'Phleboliths are seen in \nSelect and explain. \nA. Dental Pulp, B. Salivary Gland duct, C. Cavernous Hemangiomas, D. Subepithelial Bulla', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]