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 10-year-old boy presents with superior quadrantanopia and headache. Most likely diagnosis is - \nSelect and explain. \nA. Temporal lobe tumour, B. Optic atrophy, C. Pituitary adenoma, D. Craniopharangioma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]