This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Organic Mental Disorders, Subject name: Psychiatry
[{'content': 'Vascular dementia is characterized by: a. Disorientation b. Memory deficits c. Emotional lability d. Visual hallucinations e. Personality deterioration \nSelect and explain. \nA. all of the above, B. a,b,c,d, C. a,b,e, D. b,c,d', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Vascular dementia presents with memory loss, mood changes (depression, irritability, emotional lability), delusions and hallucinations confusion and disorientation. Personality changes are more commonly associated with frontotemporal dementia', 'role': 'assistant'}]