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: Surgery
[{'content': 'Which of the following statements about pulmonary hamartoma is true? \nSelect and explain. \nA. It is the most common benign tumor of lung, B. More common in males, C. Chest X-ray shows "Pop corn calcification", D. All are true', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]