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': 'Features of a benign lung lesion are: \nSelect and explain. \nA. Speckled calcification, B. Peripheral calcification, C. Ring enhancement, D. Shows hot spot with radio labelling agent', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Speckled calcification', 'role': 'assistant'}]