This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': 'Suprasellar aneurysms causes \nSelect and explain. \nA. Binasal hemianopia, B. Bitemporal hemianopia, C. Homonymous hemianopia, D. Congruous homonymous hemianopia', 'role': 'user'}, {'content': "Answer: B \nExplanation: (B) Bitemporal hemianopia # Sagittal (central) lesions of the chiasma.These are characterized by bitemporal hemianopia and bitemporal hemianopic paralysis of pupillary reflexes.> Lateral chiasmal lesions: Salient features of such lesions are binasal hemianopia associated with binasal hemianopic paralysis of the pupillary reflexes.> Lesions of optic tract:These are characterized by incongruous homonymous hemianopia associated with contralateral hemianopic pupillary reaction (Wernicke's reaction).", 'role': 'assistant'}]