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: Radiology
[{'content': 'Which structure resembles radiographically with PDL of maxillary 2nd molar? \nSelect and explain. \nA. Greater palatine foramen, B. Median palatine foramen, C. Zygomatic process, D. Angle of maxilla', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Greater palatine foramen is seen as a radiolucent area (oval or round). Rarely, it is seen in the periapical film over the roots of first molar and sometimes at the apices of second premolar and second molar. This should not be confused with periapical pathologies.', 'role': 'assistant'}]