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': 'Average period in days a hospital bed remains vacant between one discharge and another admission is known as: \nSelect and explain. \nA. E interval, B. B interval, C. T interval, D. V interval', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Average period in days a hospital bed remains vacant between one discharge and another admission is known as T interval. The value of T may be positive or negative. A negative T is indicative of scarcity of bed and overutilization. Ref: Textbook of community medicine, S. Lal, 3rd edition pg: 685.', 'role': 'assistant'}]