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: Physiology
The only inducible urinary buffer is 
Select and explain. 
A. Bicarbonate, B. Phosphate, C. Ammonia, D. Plasma proteins
C: Ammonia
Answer: C: Ammonia 
Explanation: Ammonia is only inducible buffer

It is an extracellular buffer