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': 'Cognitive disordres are \nSelect and explain. \nA. Intellectualization, B. Depersonilization, C. Dementia, D. All', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Dementia - Cognitive or higher mental functions (i.e. abstract thinkingQ, concentration, memory, intelligence, orientation, consciousnessQ) are disturbed in organic brain syndromesQ (le delirium, dementia or organic amnestic syndromeQ). Impaired cognitive functions with delusions & hallucinations indicate towards diagnosis of delirium.', 'role': 'assistant'}]