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: Forensic Medicine
[{'content': 'For diagnosis of lunacy, a person can be kept under observation at a stretch for - \nSelect and explain. \nA. 2 Days, B. 7 Days, C. 10 Days, D. 30 Days', 'role': 'user'}, {'content': 'Answer: C \nExplanation: According to Mental Health Act, 1987, if giving opinion on the mental status of allegedly mentally ill is not possible, the magistrate may permit observation of such a person under section 28 in an observation ward of a general hospital or another suitable place for 10 days at a time, extendable to a maximum of 30 days.', 'role': 'assistant'}]