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: Medicine
[{'content': "A 30-year-old women presents a history of amenorrhoea and impaired vision of six month's duration. Physical examination shows everything except for pale optic discs and diminished visual acuity. The most likely diagnosis is - \nSelect and explain. \nA. Pituitary adenoma, B. Craniopharyngioma, C. Hypothalamic glioma, D. Benign intracranial hypertension", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]