This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Radiology
[{'content': "Characteristic imaging findings in Alzheimer's disease? \nSelect and explain. \nA. Temporal lobe and parietal lobe atrophy, B. Temporal and occipital lobe atrophy, C. Frontal and parietal lobe atrophy, D. Parietal and occipital lobe atrophy", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans AThe 2 most specific findings of Alzeimer's disease on neuroimaging are mesial temporal lobe atrophy (especially hippocampus and Enterohinal cortex) and temporoparietal cortical atrophy.", 'role': 'assistant'}]