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': 'Popcorn calcification is seen in: \nSelect and explain. \nA. Pulmonary hamaoma, B. Fungal infection, C. Metastasis, D. Tuberculosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Pulmonary hamaoma', 'role': 'assistant'}]