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: Social & Preventive Medicine
[{'content': 'The incidence of mental illness is the maximum if the causal factors affect a particular period – \nSelect and explain. \nA. Perinatal period, B. First five years of life, C. School age, D. Adolescence', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The root of mental health are in early childhood (first 5 years of life) - Park\nOther crucial period for mental illness : -\n\n\nPregnancy (Prenatal period)\nSchool age\nAdolescence\nOld age', 'role': 'assistant'}]