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: Pathology
[{'content': 'In Hydrocephalus ex vacuo, the compensatory enlargement of ventricles and an increase in CSF volume due to brain atrophy is seen in- \nSelect and explain. \nA. Alzheimers diseae, B. Picks diseases, C. Both, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hydrocephalus ex vacuo\n\nInsignificant cortical atrophy, there is compensatory ventricular enlargement secondary to loss of parenchyma →\xa0Hydrocephalus ex vacuo.\nThis can be seen in Alzheimer disease and Pick disease. - Anderson 10th/ep. 2740.', 'role': 'assistant'}]