This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Psychiatry
[{'content': 'Perseveration is \nSelect and explain. \nA. Repetition of an activity, B. Repetition of word or a phrase, C. Inability to change the mental set in spite of a new stimulus, D. Persistence of uncomfortable posture for long periods', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) Repetition of word or a phrase > "Perseveration refers to a tendency to present with a point or theme, even after it has been dealt with exhaustively or the listener has tried to change the subject."> Perseveration is seen in schizophrenia3 but is not characteristic of this disorder.> It also seen in autistic disorders and few other psychosis. It is chracterised by repeatition of thoughts, speech or brief behavioural sequences without a sense of incompletion and not as a preventive or a corrective measure. This implies clearly that it is carried out without any purpose.', 'role': 'assistant'}]