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: Ophthalmology
[{'content': 'Which of the following is most likely to produce a junctional scotoma \nSelect and explain. \nA. Meningioma, B. Craniopharyngioma, C. Pituitary gland enlargement, D. All the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Junctional scotoma is due to lesion at junction of Optic nerve and chiasma. Which is m/c\xa0due to meningioma.', 'role': 'assistant'}]