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': 'To differentiate delirium from dementia in a 75-year-old male patient, the most appropriate diagnostic technique is \nSelect and explain. \nA. Evoked EEG, B. CT, C. PET, D. EEG', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Electroencephalogram (EEG) measures electrical activity in the coex and can be useful in differentiating delirium (abnormal EEG) from dementia (usually normal EEG) Evoked EEG is EEG measured after giving a stimulus.', 'role': 'assistant'}]