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': 'All are examples of form of thought disorder except \nSelect and explain. \nA. Obsessive compulsive Neurosis, B. Delusion, C. Schizophrenia, D. Loosening of association', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B. i.e. Delusion', 'role': 'assistant'}]