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': 'Which is the most common visual field defects in pituitary adenoma \nSelect and explain. \nA. Bi temporal hemianopia, B. Homonymous hemianopia, C. Scotoma, D. Bilateral superior visual field defects', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]