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
True is all except 
Select and explain. 
A. Renin - liver, B. Renin- kidney, C. Renin substrate - liver, D. ACE- lung endothelium
A: Renin - liver
Answer: A: Renin - liver 
Explanation: A i.e. Renin - liver