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: Medicine
Anuria is defined passing Less than _____ ml urine/day 
Select and explain. 
A. 400ml, B. 3L, C. 100ml, D. 1000ml
C: 100ml
Answer: C: 100ml 
Explanation: Anuria  <100ml.
Oliguria  < 400ml.