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': 'Proposed number of female health workers at subcenter according to IPHS norms. \nSelect and explain. \nA. 1, B. 2, C. 3, D. 4', 'role': 'user'}, {'content': 'Answer: B \nExplanation: IPHS subcenter norms\n\n\n\n\xa0\n\nExisting\n\n\nProposed\n\n\n\nFemale health workers\n\t\t\tMale health workers\n\t\t\tVoluntary workers\n\n1\n\t\t\t1\n\t\t\t1\n\t\t\t(optional)\n\n\n2\n\t\t\t1\n\t\t\t1\n\t\t\t(optional)\n\n\n\n\xa0\n2/3\n3/4', 'role': 'assistant'}]