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': 'PARULIS is an inflammatory enlargement seen in \nSelect and explain. \nA. End of sinus tract, B. Extraction socket, C. Due to irritation from calculus / over hanging restoration, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]