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': 'Which of the following periapical conditions is often associated with a vital pulp? \nSelect and explain. \nA. Apical cyst, B. Apical scar, C. Condensing osteitis, D. Chronic apical periodontitis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]