This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Radiology
[{'content': 'Cystic lesion in suprasellar region with calcification \nSelect and explain. \nA. Craniophangioma, B. Meningioma, C. pituitary adenoma, D. Oligodendroglioma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ref : david sutton 9th ed', 'role': 'assistant'}]