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: Psychiatry
[{'content': 'Which of the following feature differentiates between delirium from dementia? \nSelect and explain. \nA. Confusion, B. Difficulty in communication, C. Hallucination, D. Memory loss', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Altered sensorium and confusional state is seen only in delirium which is absent in dementia.', 'role': 'assistant'}]