This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
Anuria is defined as urine output less than ? 
Select and explain. 
A. 4 ml/hr, B. 8 ml/hr, C. 12 ml/hr, D. 16 ml/hr
A: 4 ml/hr
Answer: A: 4 ml/hr 
Explanation: Ans. is 'a' i.e., 4 ml/hr o Oliguria - <400 ml/davo Anuria - < l00ml/day