This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Rural & Urban Health Centres, Workers, Norms, Subject name: Social & Preventive Medicine
[{'content': 'Provision of total beds at PHC & CHC is:- \nSelect and explain. \nA. PHC 15, CHC 30, B. PHC 4-6, CHC 15, C. PHC 4-6, CHC 30, D. PHC Zero, CHC 30', 'role': 'user'}, {'content': 'Answer: C \nExplanation: - There are no beds at Sub-center level.', 'role': 'assistant'}]