This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Community Healthcare, Subject name: Social & Preventive Medicine
How many beds are there in PHC for indoor patients? 
Select and explain. 
A. 2, B. 3, C. 6, D. 9
C: 6
Answer: C: 6 
Explanation: ANSWER: (C) 6REF: Park 20th ed page 805Standards prescribed for PHC:One PHC for every 30,000 rural populationin the plains, and one PHC for every 20,000 population in hilly, tribal and backward areasOPD services; 4 hours in morning, 2 hours in after noon/eveningMinimum OPD attendance should be 40 patients per doctor per day24 hour emergency servicesInpatient services (6 beds)