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': 'An anganwadi worker is trained for- \nSelect and explain. \nA. 3 months, B. 4 months, C. 5 months, D. 6 months', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e.. 4 months", 'role': 'assistant'}]