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': 'Other name of Bay cyst is: \nSelect and explain. \nA. Periapical cyst, B. Lateral periodontal cyst, C. Radicular cyst, D. Dentigerous cyst', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Apical\xa0Periodontal\xa0Cyst (Radicular Cyst, Periapical Cyst, Root End Cyst)\nThere are two distinct variants of apical periodontal cysts, namely, those containing cavities completely enclosed in epithelial\xa0lining\xa0(True\xa0cysts),\xa0and\xa0those\xa0containing epithelium-lined cavities that are open to the affected root canals (bay cysts or pocket cysts).\nReference: Shafer’s Textbook of ORAL PATHOLOGY Eighth Edition page no 76,77', 'role': 'assistant'}]