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': "Craig's cyst is: \nSelect and explain. \nA. Paradental cyst., B. Buccal bifurcation cyst., C. Collateral cyst., D. All of the above.", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Paradental cyst is associated with vital tooth and mandibular 3rd molar, recurrent pericoronitis.', 'role': 'assistant'}]