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': 'Consider the following statements; giant cells are a\ncharacteristic histopathologic finding in \nSelect and explain. \nA. Apthous ulcers, B. Keratocyst, C. Brown tumor of hyper parathyroidism, D. Dentigerous cyst', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]